You could switch to a Silverstone FT02 or FT05 rotated case so the GPU is vertical.
Something I have been thinking about.. I would like a case that is layed out like a Test bench.
Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.
You could switch to a Silverstone FT02 or FT05 rotated case so the GPU is vertical.
I use a cut to size bit of wood dowel, rapped in black isulating tape to hold mine up ! Cost 80p...
It sits on the base of my case & fits on to the underside of the cooler, I've use the same bit for 3 GPU's now & works a treat. You can't really see it as the case & hardwear is black too...