The ramps I'm talking about really aren't that steep, They just come off of a really flat parking lot. I will be back down there fishing in 3 weeks and will study the ramps a little more then. I've never thought about using them with a bigger RV until recently. I actually have a couple of pictures of one of the ramps but I can't figure out how to post it from my iPad to this forum.
If any one that owns one of the newer style Jayco Sneca's on the International chassis is interested in a free guided fishing trip in the Everglades Park and Keys back country let me know. If we can hook my boat up to it and try to launch it at both of the Park's boat ramps (they are 100 yards apart but launch into two different bodies of water), I will be glad to take you out for a day targeting tarpon, snook, redfish, sea trout, mangrove snapper and goliath grouper. We could also chase big Lemmon and bull sharks if that's your thing. Species targeted depends on time of year. It's worth it just to see the place from the water. I'm not a Captain but I do fish it 5 weeks a year and do just as well as any Captain down there.
So if you are thinking of a trip to South Florida with your Seneca and wanted to get a free day on the water, let me know.