The Grummans are very heavy but extremely long lasting with zero care plus cheap to buy used. The usual price for a used Grumman is about $500. The Grumman can be left outside in direct sun with no problem at all. I have the 17' and with another person, we can put it on the rooftop easily. I have a tough time doing it by myself. I only have the one canoe right now. I think the best, most convenient solution for transporting the 17' is a trailer. It will be MUCH easier for me to lift the canoe onto the trailer compared to lifting it onto the roof. I'm planning on building up a Compact Camping Concepts trailer kit to accommodate two 17' Grummans and a storage box for paddles and camping gear. The trailer kit has a bolt on tongue so an extra long tongue can be used for the canoes. Or a short tongue can be quickly swapped for just camping gear. I'm working on installing a center seat so I can paddle the 17' solo with a kayak paddle. I solo paddle the canoe right now by sitting on the front seat facing backwards. The problem with that arrangement is I have to weight the other end to keep the canoe mostly level. Installing a center seat will allow the canoe to be properly paddled by one or two. Setting up that trailer for 2 canoes with center seats will allow me to easily accommodate 1, 2, 3, or 4 people at a time. If it's just me, I'll pull off the second canoe, leave it at home, and go.
DIY Trailer Welded Frame Kits