Thanks for the nexus link. Didn't think I'd be able to keep the coaster brake, but maybe I can.
That backrest idea is great!!
Unfortunately this chopper is not really a stretch, and that's part of my problem. I think I could get alot more out of my strokes if it were -- more leverage? The seat tube is at a great angle, but the bracket is only 3 or four inches forward of it's base.
I'll have to try to load some pics after I wake up some more. That might help everyone advise me better, and/or lead to some more ideas...