posted 01-18-2008 02:30 PM ET (US)
I have a 150 Sport and find the seating is much more comfortable than it looks. It also seemed better than the 130 Sport for the driver as the distance to the steering wheel seemed more comfortable to me on the 150 than the 130.Since I have two little kids I filled in the cutout in the backrest so they didn't fall through when leaning back. I added some Starboard in this space, then topped it with a factory backrest cushion. The smaller of the two 150 Sport backrest cushions fits this space perfectly. The Starboard is installed with just bolts, so it would be easy to remove in the future without leaving much sign it was ever there.
For creating a higher seat back I would add a backrest similar to the one on the optional stern seat of the Montauk 190. It's a cushion attached to the boat by two horizontal tubes that go into holes in the deck. You could either put holes in the top of the existing 150 backrest (depending on the tube size) or create a bracket/mount to attach the tubes to the back of the backrest. The hole method would allow removal for less drag when trailering. As far as buying the backrest, you'd have research the size and price of what's already available (for other Whaler models or the Todd example in the link below) and compare that to what a local canvas shop could do for you. The Todd example is only $200 retail, which could be a cheap way to go if it's the right dimensions for you. You could also build a similar backrest in wood or Starboard that spans the entire seat width.
http://www.toddusa.com/productdetails.aspx?id=4&f=5
Good luck and please post pictures of whatever you end up doing!
ScottS