The Mustang one I adapted into my stock rear seat folds down forward so it's easy to swing a leg over and reach back to raise. Surprised Corbin doesn't make one that does that. Might try calling them.
SWAGFU a question you have the gunfighter... that's a fairly high back seat BEFORE the backrest... if you bought the regular tour seat with the corbin back rest might that be just right? You live near Corbin I'm sure they'd let you demo it then you could, I dunno sell the custom gunfighter to someone on this forum (ahem)