I made something similar to those Thule hood loops. I just bought about 2’ of tubular webbing from the local REI at 45 cents/ft, cut it in half and melted the ends, folded it over and used a soldering gun to put holes through the ends. (The soldering gun melted the holes together, which didn’t hurt.) Popped the hood and found a small bolt holding the fender on, pushed it through the webbing hole and tightened it up. Fold the flap toward the engine and close the hood when not needed. For the stern, I’ve got a trailer hitch with chain eyes I can tie to, but similar straps could be made to work for a hatch or trunk.
I bought black webbing, but if I do it again I’ll probably use the “tan” so that when I take the boat off, I’ll be more likely to see I’ve still got the strap lopps sticking out before I drive off.