raft sizing

I’m looking to get a raft for my partner who is 5’1’’. Obviously the alpaca would be the ideal model for her, but I’m wondering if I could get another yak so I could loan it to a friend. I doubt she will ever do anything more than class III. What is it like paddling a boat thats too big? thoughts?

The faithful reproduction of the ancient sailing craft, built from eight balsa logs brought from Ecuador for the project, was created in less than six weeks by 30 students in the Ancient Materials class taught by Professor of Archeology and Ancient Technology Dorothy Hosler of the department of Materials Science and Engineering. The replica was based on an analysis carried out by Hosler and her former student Leslie Dewan '06, which was published last year in the Journal of Anthropological Research.

Which part of your reply is in response to the OP’s question?