I would suggest talking with the guys at 11 Point Canoe Rental, on the internet as well, i think one of the owners writes for the forum under the Eleven Point River section, both are very knowledgeable about obstructions on the river and would probably help in shuttling vehicles, also have maps showing camping locations.
More importantly they fish and have flies or lures that work and know where they work etc. it is a great river, i am planning multiple trips this summer, camping at Greer and floating Greer to Turner. Has always been a fun time and a enjoyable river.