This guy made 8.5 which is pretty awesome. What a wonderful addition to DIY watercraft this hobby is: https://www.ripleys.com/weird-news/aboard-a-gourd/
The Ultralight Hiker
Ultralight hiking, backpacking, bushwalking, deer hunting, canoeing, pack rafting, tips, trails, adventures, gear, reviews...Over 1600 posts & 70 years' experience.