If you're worried about the car, there is another ramp just down stream (1/4 mile) from the Hwy 47 bridge in Hollingsworth Bluff. This is where I usually put in. It's a safe area and the FWC often puts in there. The one just on the downstream side of Ginnie is high and dry, pretty much canoes/kayaks only. Not enough ramp to actually launch a trailer.

If you're going up stream to get past Ginnie, stay to the left near the bank and it's just deep enough. Lift the motor part way and I can usually get thru there even if the river is low. Watch out for the submerged log on the south side just just as you start into the shallows. The advantage of going up stream is if you can't get thru you just lift the motor and the current will flush you back out. If you go in from Rum Island and come south, you may not be able to get back up stream on the return trip. Kinda like diving, when given a choice, always go into the current. I will never go downstream thru the rapids unless I know I can make it back up stream. That would be a blind traverse...