I have the same type of boat except mine is a 10E. I have disc problem as well also I had 5 disc removed and bolts & screws with plate in the neck,then I had my rotor cuff operated on twice. So I know how that hurts , what I have done is put one of those padded folding seats from Wal-Mart. As for moving the boat in and out of the truck. I made a cart with straps with 3/4" plywood and I can move it to the pond with my hand just keeping it balanced. I have the motor 55 thrust Minn Kota and battery rods& reels and PFD and drinks. Oh yes you can stand up on those just have to get use to it. Hope this helps!
Fish Safe today, if you don't there won't be a tomorrow!
Practice Catch, Measure, Photo, Release! ( CMPR )
Dennis