I'm looking at a 8 foot Klamath Jac boat
http://www.factorydirectboats.com/8jacboat.html for $1500
It seems like it'd be ideal for fishing the shallow spots and the occasional shore trip.
A couple of my favorite fishing spots in PWS are too shallow to get my new boat near, but I could scoot over on this and hammer away to my hearts content.
Its about 100 lbs but since I'm going to have a swing-arm davit the boat weight isnt a factor.
I'd put some sort of plastic or dense foam cradle or strips on the pilothouse roof to keep the noise down when it's stowed, maybe spray some sort of bedliner in its interior to also help keep the noise down.
And it should last just about forever.
My available roof space is 9'-9" long by 6'-9 wide so this'd fit perfectly. Its only 18 inches deep so it'll clear the radar (whenever I actually get one)