Conestoga rear flap mod ideas for overhanging freight?

Hey all just wondering if anyone has an easy, minimally envasive solution for keeping the rear flap of a roll-tite partially rolled up to allow for freight overhanging off the rear end? The trailer Im pulling has a quick draw kit.

I've thought of attaching a vertical clip on both ends (inside and out) 1/4 and 1/2 way up the flap as well as horizontal ones on the ends where those would be to somewhat secure it to the outside frame - thinking it would stay rolled up but just not sure if that would keep it from flapping around like crazy?

I refuse to subscribe to the theory I've heard from guys who have pulled trailers with this tarp system that say you can't be overlegnth!

Thanks in advance for any ideas y'all might have

 

Thanks for the suggestions guys. The trailer is a 53' step deck. I use it primarily for a 10-20 drop milk run for a large steel supplier we haul for. I've often got beams, plate, and rebar hanging off the back end to make room for the skids of aluminum and stainless closer to the kick....can never have the skids piled high to allow for fitting it all in at the back as the kick is loaded with 20-24' bundles of whatever. So far finding this type of system to be the muttsnuts as I'm sick of working under the tarps when a guys gotta bang out 10 or so drops in a day over several hundred miles.

The only problem with bungeeing the excess flap to the freight is it's often some random pieces sticking out preventing me to lay it down across the whole width of the deck. I like the idea of the cord and pulley.....gonna check with quick draw to see what that would cost for a new one as this rear flap has seen better days. In the meantime as a quick fix I think I'm going to try to put some clips on to keep it partially rolled up, then bungee it forward towards the inside.

So far I've been lucky, haven't had too crazy of a load the past couple weeks....i am dreading the week one of my drops orders a bunch of 60' beam!