Built my own, for a set of Jack's Cutthroat tubes. It's about five years old, no worries so far. It's been on rocky class IV water and also done multi-day trips with a load (including me, at 235 lb.) When the water is low, or for narrow creeks, I bought a Jack's Fat Cat paddle frame, so I've got two boats with one set of tubes.
- - -
This is copied from an old post:
New Light Cat Frame
We finally got enough water to go. Here's the wee cat rigged and ready to launch. Total weight of the frame (with floor, stands, locks, and seat) ended up at 47.5 lb. One of my favorite runs has a steep carry from the takeout, and my old frame kept gaining weight, year by year.
Tubes are Jack's Cutthroat (12.5' x 16") with 4 dees per side. The oars are Gull 7-1/2 footers.
The oarstands are homebuilt (wrote 'em up earlier on this thread). The scouting floor is a half-panel of PolyMax kennel floor (also written up earlier, along with most other details).
- - -
Here's the paddle frameó