I got bored at work today and drafted these up:
I
Everything is made with 2x4' s and 1/2 plywood.
I may have to make the base wider under where the shooter sits as it is only 20" wide.
I may also add wheels on the base under the seat so when it is tipped up it can be easily moved
Got a suggestion from a guy at the range that I' ll throw in. He advised going to a music store and getting a drummer' s stool. He had one. Seemed like the perfect thing to use, rather than built in seat.