This is probably not the best forum to ask this question; however, it is the friendliest. My ultimate boat build would be traditional build with lumber harvested and milled by me. I've got plenty of white ash for framing, although not as highly regarded as some others it's good enough for me and I've got cherry to substitute for mahogany for a few fancy touches. Planking is my problem, If I look long and hard I might be able to purchase enough cedar logs that are good enough but even then, it will probably require a lot of knot plugging and scarfing. This brings me to my question, how about tamarack? After quite a few web searches I don't have a good answer. The advantage for me is that I could quite easily harvest a dozen 18' butt logs which would be at least 5 times the quantity I would need for a 16' skiff. None of it would be knot free but tamarack tends to have good sound red knots that should not need plugging, it's mostly warping and cracking that concerns me. I've used a lot of it for various projects over the years with pretty good results, but boat building is a little different than a porch floor.
Not to add fuel to the fire, but I think the best selection is what you have. A little research reveals that it is much like the question - what sauce you want to eat on the type of bbq meat you want to eat or what color is the best. Or what is best wood to smoke bbq with. Lots of myths and crap spouted by......err.... I'll be nice. Never use softwoods - well what do you think they use in Scandanavia and other countries that don't have much hardwood?
Noah - Gopher wood
Mesopatamia - Reeds
Egyptians - Cedar of Lebanon and acacia
Vikings - Oak largley
Britain when it was conquering the world - Oak, Elm, Scots Pine
One I really like - Hawaii - Koa
Other Pacific Islands - Breadfruit, Coconut Palm, Eucalyptus
Australia - Eucalyptus, Hoop Pine, Jarrah, Tasmanian Blackwood, Tasmanian Oak, Paulowania
Eskimos - sealskin and driftwood (usually spruce)
Vietnam - Luan, Teak, and others including Rosewood and Ebony
Brazil - Ipe, Cumaru and others.
Indonesia - Ironwood, Bangkiria, Teak
Among others
Oak, Pine, Fir, Larch, Mahogany, Sapele, Cedar, Spruce, cypress, redwood