I bought a Hobie Pro Angler hull only- without the drive or the seat. The drive issue was easy to fix in that I already had a Hobie Oasis. The seat was the big hurdle. I could wimp out and buy the whole seat assembly or I could make one. I choose the later.
This is what I started with

With some help of some measurements from my Jax Kayak Fishing friends, I was able to make some bottom pieces from Home Depot 1x1 tubing and alot of drilling.

I purchased a boat seat and swivel from Academy Sports. After playing with different ways to attach it to the bottom bars, I came with quick and dirty solution was 2x4's, 1x2 cedar strips ripped to 1", and 3.5" bolts with wing nuts.


Let know what you think. If this doesn't last I guess I can always purchase the whole assembly.Thanks