I made one much as you described for my 6A.
From giving many rides to non-aviators I've found that entry and exit are challenging for some. So,I put a center console between the seats and handles on the roll bars to help folks.
Getting in, folks are concerned about stepping on the seat cushions. They aren't allowed to do that at home

If there is carpet on the floor, it may also slip and hinder entry/exit. Getting out, some folks have difficulty because they want to reach up with both hands and grab the the fiberglass fairing over your canopy rollbar. (bad form!)
So, an alternaitive is the handgrip on the bow for the right hand and the center console for the left. If the carpet doesn't scoot out from underneath them,they might just get up enough to get their backs hung on the rear seat cushion,then their foot on the bottom cushion or seat belt/headset cord.
Oh well, at least they enjoyed the ride!