A good method to find websites that offer leaning posts with storage is to use a search engine with the arguments "leaning post seat storage".
For example, this search found many vendors offering leaning post seats with storage:
http://www.bing.com/search?q=leaning+post+seat+storage&search=&form=QBLH&sp=-1&pq=leaning+post+seat+storage&sc=3-25&qs=n&sk=&cvid=AF7B722F82D74EF3BAE0156D8562F23DHowever, as I mentioned in my earlier reply, leaning post seats with storage are usually intended to be used on boats with considerably wider beam and considerably longer length than is available in the cockpit of a 16-foot skiff.
The original interior components of a 1971 NAUSET 16 boat were constructed of varnished wood. You should consider maintaining that motif and constructing a leaning post seat with storage of your own design to fit the available dimensions of the console and cockpit using fine woods.