Sounds like R-2
For day-trip thrills without too many swims, an R-2 boat would probably serve best: Shredder, Hyside PaddleCat, or Jack's Culebra (jpwinc.com). Main problem is that you need two paddlers, a problem when you want to do a float alone (imagine a 4-ft wide canoe).
A tandem duckie can be paddled by one, no sweat.
I just built a rowing frame for an old Shredder so it could be soloed, or used for fishing day-trips (with a seat frame over the spray deck).
At least you have interesting choices.