AI seat mod the bigger the cushion

The reason high back seats aren't higher is to accommodate a high back PFD and to not restrict paddling.

Understood. They probably serve 90% of body types just fine.

Gen 2, big bamboo

Extra tall inflatable back cushion.

Will still need a back stay to the AKAS but much better than stock for me. CUtting in aluminum tomorrow. Strap all kinds of gear to the back. No extra straps to remove when you need to take the seat out.

Looks good.  I hope it works for you. 

 
Nice to have such fab tool in your arsenal.

Here she is in all her glory, Bauxite Betty! .080 inch thick 5052 H32 aluminum. Lightweight and strong.

18" wide 24" high. Laser cut, deburred and run through the rollers to give the back some arch.

Pimp! 

I like it.

That is sweet! 

Back stay of 6061 T^ aluminum .080 thick screwed to custom AKA mount laser cut and machined from Delrin. SS fasteners with wingnuts so the seat comes off.

I would like to try it.  Looks good as heck

Here is a PVC solution