Yeah, I'm shooting a Benelli Super 90 M1 right now. I absolutely love it.
When I say 'layout boat' I'm using the term very loosely

We actually built some custom rigs specifically for the rocky shoreline we often hunt from. Started out with an 'Otter' (basically a small boat intended to haul decoys), and added some BMX-type wheels, a zippered camo top that you can zip over yourself, etc. We have to haul our gear across about 1/4-1/2 mile of rocky shoreline to get to the water. These work perfect. We sit inside them to keep dry and cover up with some brush.
Edit: And my buddy is sitting up in his right here. Normally, we are laying down completely - they're so comfortable it's easy to fall asleep!