The failed power supply makes sense.
Go with a startech industrial hub. I'm pretty happy with mine. Also, build yourself a box for all your gear to plug into at the mount that you can close up. I made mine out of Tupperware and it worked pretty well. I had two holes in the sides. One for the power/input cables and one for the cables going to the scope/cameras.
The downside to USB is it wasn't really designed for repetitive use 
Always keep a spare cable or two around and an extra hub.