So ... it is possible to modify your existing da chair holdit™ from Podunk Ideas.com to make the seat angle adjustable ...
I simply added holes in the bottom section of the bracket, reversed the bottom 1/4” bolt direction and replaced the locknut with a thumbknob ...
I haven’t decided if I will make this a feature of future da chair holdit™ orders ... (please give feedback) ..
Attachment 371513
Rickie