When I'm rafted up or out boarding I fill the rear bags a little. Rafted up filling the bags keeps the swim platform underwater and it doesn't get as hot. Anyway, when I go to dump the bags, they don't dump completely, so I have to stand in the compartment and lift the bag until all the water's out. If the pump loses prime, then whoever's with me has to turn the switches off, then back on to try to pick up the water again. I'm also getting water back there under the bags somewhere and have to take them out when it's parked in the garage to dry.
The remedy: I built a pair of ramps from 3/4" MDF (that's what I had at the house already). They start at about 4" from the floor in the rear of the boat, and are about 11-12" in the rear. Once they were built, I covered them in spray-on truck bed coating to waterproofing. The bag's sit perfectly on top and they dump all the way to empty. The only way to get the rest of the water out is to unhook the bag and dump them over the edge. With the bags off the carpet, the carpet dries a lot better also.
1 of them has already started to buckle a little bit from the water, but I wasn't too sure on how these would work when I first built them so I may cut out some new ones over the winter out of something that'll handle the moisture a little better.
I'll get some pics of them next time I'm in the boat.