I'm using stand screw jacks in the middle. I don't think it makes much difference on my 2104S, but probably will be a little more noticeable on the longer trailer when it gets here. I may just have to do the scissor jack thing to keep me from crawling under it though. I must be getting lazy!
2012 Chevy Tahoe LTZ - HD tow package
2017 Rockwood 2703WS Emerald Edition