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Author Topic:   9-Foot Tender Power
spark posted 05-28-2004 12:07 PM ET (US)   Profile for spark   Send Email to spark  
[I] just bought a 9-foot Tender with a steering station [that is] rated for a 5-HP [engine]--seems light. [Seeks replies from readers who have] experience with more [than 5-HP] on [a Boston Whaler 9-foot Tender]. [I] trying to figure out what [engine] to buy [for use on a Boston Whaler 9-foot Tender].
ryanwhaler posted 05-28-2004 02:44 PM ET (US)     Profile for ryanwhaler  Send Email to ryanwhaler     
I've seen them with 9.9-HP engines.
Bigshot posted 06-01-2004 01:23 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
I would do a 9.9.
spark posted 06-01-2004 02:18 PM ET (US)     Profile for spark  Send Email to spark     
[Is use of a 9.9-HP enigne on a Boston Whaler 9-foot Tender] not too much?
Bigshot posted 06-02-2004 01:20 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
I have seen a few with 15's and one with a 25 or 35hp...no BS. 8 to 9.9 is necessary if you want to plane, any less and she won't unless driven by someone who weighs the same as the Geico gecco.
oysterman posted 06-02-2004 03:13 PM ET (US)     Profile for oysterman  Send Email to oysterman     
A friend of mine used to have same boat with 9.5 on it. Worked great, we buzzed around in it all the time.
Bliemer posted 05-11-2005 10:03 PM ET (US)     Profile for Bliemer  Send Email to Bliemer     
Spark, What did you end up with? I am in the same situation...
John Parry posted 05-17-2005 07:53 PM ET (US)     Profile for John Parry    
A buddy of mine let me try out his 9' whaler alone. Got it barely on a plane while slightly leaning foward ( I weigh 150) and the wind behind me. They are definetely a sweet little boat. It was 4hp Mariner. Internal gas tank(in motor), an anchor, and an oar was the load. If you go low power, try getting behind a bigger boats wake to give the boat that extra heave to plane (of coarse I only did this when only a few boats around were preseent for saftey reasons.) Good Luck with your 9' BW.
JOHN P
Royboy posted 05-23-2005 10:23 PM ET (US)     Profile for Royboy  Send Email to Royboy     
Will twin 5's fit? 8>)
BobbyMW posted 05-24-2005 11:04 AM ET (US)     Profile for BobbyMW  Send Email to BobbyMW     
I came across a cheap used 9' and gave it to the 11 year old son of a friend. Together we built a dashboard console (kind of like a very small Mischief) for a speed boat look. His father had a nice 25 HP Mercury, remote controls and all, which we put on. Initially, I was concerned it would be grossly overpowered. In a sense, it is, because it's a rare day on the Severn that you can go full speed comfortably. On the other hand, the hull is clearly strong enough and the boat doesn't feel any less safe than a 13'. The 11 year old loves it, but honestly, a grown adult is going to feel a little silly doing anything other than commuting from a dock to a mooring in a 9', which a 5 HP will accomplish just fine.

-Bobby

njwhaler posted 05-25-2005 09:36 PM ET (US)     Profile for njwhaler  Send Email to njwhaler     
I would like to see you try an Optimax 115. But first, set up a video camera for us so we can see your maiden voyage....LOL
WT posted 05-25-2005 09:40 PM ET (US)     Profile for WT  Send Email to WT     
10 foot jetskis have 215 hp. I think a 9.9 would work on your rig. Twin 5's on a whaler drive would work too.
Kevin Bliem posted 06-03-2005 04:32 PM ET (US)     Profile for Kevin Bliem    
Ended up with a 15 merc. It works great. Alot of fun to mess around with.
Sheila posted 06-04-2005 01:12 AM ET (US)     Profile for Sheila  Send Email to Sheila     
Kevin, can you share some performance data with us?
where2 posted 06-04-2005 11:56 PM ET (US)     Profile for where2  Send Email to where2     
I've run an 8' Clown boat with a 9.5Hp engine. A 9' Whaler should be fine with 10Hp... (This particular Clown boat was just like those used at Cypress Gardens and SeaWorld where they run 25Hp Merc's on them...)
Kevin Bliem posted 06-07-2005 08:52 AM ET (US)     Profile for Kevin Bliem    
15 2 stroke merc. Planes nicely, fast!!
Dakota Classics posted 08-10-2005 06:52 PM ET (US)     Profile for Dakota Classics  Send Email to Dakota Classics     
Where 2 was talking about a Cypress Gardens Clown Boat. Does anyone have any information about these? I used to own one and would like to again.
Red Rippah posted 08-12-2005 05:42 PM ET (US)     Profile for Red Rippah  Send Email to Red Rippah     
See the post by riverrat321 called Decisions... some folks are putting 50HP on 11 footers so there you go! You might attach some side wings to your 9' and mount a 40hp, could be a lot of fun (if you live through it)
HarlemSgt posted 12-14-2009 07:40 AM ET (US)     Profile for HarlemSgt    
[Revived this discussion after it was dormant for four years to say;]

I have 6 hp on my [Boston Whaler 9-foot Tender] and it moves okay. [The boat cannot] get on plane. I bought a 15-HP disguised as a 9.9-HP. [I] hope to try it out this spring. A 5-HP is clearly not enough for these little boats.

contender posted 12-15-2009 12:21 PM ET (US)     Profile for contender  Send Email to contender     
I had a 9' with a 8 hp yamaha 2 stroke, could not get(stop it) the boat from porpoising. Felt it was to unsafe for my kids. Traded it for an 11' and put a 25 yamaha 2 stroke on it. World of difference and much more stable. After having the 9 foot I can not see putting more than a 6 hp and only using it to go from shore to a boat moored in the harbor or on a small lake. The 9ft whaler boat is just to unstable...Take care
footsie posted 12-20-2009 10:20 AM ET (US)     Profile for footsie  Send Email to footsie     
I have a 15 hp Yamaha 2 stroke on my 9 footer. I added smart tabs on the transom and dual fins to the motor. It is very stable, fast (27 mph) and fun for one person.
Tohsgib posted 12-22-2009 12:04 AM ET (US)     Profile for Tohsgib  Send Email to Tohsgib     
I'm going to put a 40 on mine just to see what it does....just kidding! There was a guy who had a 35 on one with the console mounted on the front deck...I think that is a bit overkill but would be fun. I actually sold mine before using it, I had a 8hp to try along with a 9.9 and a 15, could have been interesting. I will let you know how the the 11 with a 20hp does.
outragesteve posted 12-24-2009 02:49 AM ET (US)     Profile for outragesteve  Send Email to outragesteve     
The "Clown" boats were called "Flivers". I've seen them for sale on the internet over the years. I had one with a 2 stroke Johnson 35 and it was a blast!!!!Maybe someone has a mold???
petewentsailing posted 12-26-2009 07:55 AM ET (US)     Profile for petewentsailing  Send Email to petewentsailing     
We run our 9' Whaler with a 15 hp Suzuki 2 stroke. With a 185 lb driver, anchor, oars, etc, and full 6 gals gas, it runs 23 knots WOT (GPS). Planes with 2, or 3 if they're not too big. Porpoising was awful, but fixed with a fin on the motor.

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