Cheapest "ergonomically safe" and "decent" EUB

Hi all, So, I tried a Stagg EUB a while ago and it did not really work for me. I have a history of tendinitis. I understand with a DB one uses the weigh of the arm and shoulder to play on the fingerboard. Without squeezing strings between the thumb and the other fingers, which could cause injury. I understand "stick" shaped EUBs make this very difficult. So I wonder, what's the cheapest I can go to get an ergonomycally safe playing experience? It does not have to feel like

I bought a reasonably cheap tattooist's arm rest on eBay, which has an easily detatchable padded, erm, pad that you would rest your arm on. I unscrewed the pad, worked out where the balance point was for the EUB to sit steadily on the stand (that is the important bit), then fixed the arm pad fixing to the back of the Stagg. It kind of straddled the access panel at the back. From there is was a simple matter to slide and unslide the bass into position. it isn't as heavy duty as a drum stand b