Jim 007, welcome to iRV2.com. We are glad to have you join us and we look forward to reading of our adventures and experiences. You will need a means to hold up the sun screen mentioned above. I once used flange plates to hold up a railing system when going to NASCAR races on our last coach. I also used 1/2" EMT (electrical metalic tubing) as the psot and railing. Another way might be to use the orange cones to hold up your privacy screen; no holes in roof this way. Anyway good luck and how about posting a photo of your project when completed? Thanks.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7