Perfect! Thanks for this report. I was just researching myself how to strap a pack raft to the bike. Those look like Alpacka Alpacas, right? I was wondering about how well they fit on a bike -- surprisingly small. And how well they handle loads and rough water. I can't believe you ran those waterfalls! You answered my questions!
I am hoping to do a ride through BC's coast mountains this summer and I will need to cross some rivers and lakes.