Re: canoe camoing..
Re: Camo tape
I'd be concerned that (1) I'd never be able to get a perfectly smooth application as the tape tried to find the hull curves, keel, etc. (2) The nose point of the canoe are going to wear away the tape and start undermining it. (3) Abrasion areas where you beach the canoe are goingto wear away the tape. (4) That much tape is going to weigh more no matter what you do, and I'd do almost anything to lighten the load, especially at a long or up-n-down portage. (5) No matter what coating -- laquer, varnish, or (?) is going to wear away at some point, and the underlying tape would wear and separate. (6) No matter how ugly you think it is now, wait until parts of the tape begin to wear, and you really can't do much about it.
I'd figure out a way to hang a tarp or something to protect it while I cleaned, sanded, and painted the canoe.
re: Camping
Yeah, my bride and I did some canoe-camping in the Boundary Waters (Minnesota - Ontario border) before we had kids (our oldest is 32 now).
When we were first married, I wanted to introduce the love of my life to the wonders of camping, so we did the wilderness canoe - Boundary Waters thing

In retrospect, I could have avoided that tactical blunder by easing her into camping a little at a time

. Oh, well. The next year, she was 3 months pregnant, and it was the thunderstorm situation giving 3' waves, and us in a canoe. Not nice.
But all in all, many fond memories.