Many know the problem of the horizontal dropout with QR skewer. My old fuji touring bike has the same setup. The drive side of the rear wheel keeps coming out from the dropout. I tried to tighten the skewer as much as possible. The wheel seems to be stable, but the hub is under compression load and put rolling resistance to the wheel.

Now I use a Redline chain tensioner to hold the QR skewer inside the dropout. The concept is similar as Surly Hurdy Gurdy, which limits the movement of skewer. Could anyone tell me if a chain tensioner on the skewer is a good idea or not? since QR skewer is such a thin piece, will the skewer break or bend when I put a lot of load on the drive train?