As far as construction, we just took the wood, glued on pool noodles, put the fabric around it, and stapled on the back end.
For mounting, we used 254's slick idea of codder pins. Took us about 10 seconds to replace a single bumper (total of 4 bumpers). After one competition, we made it a requirement that each drive team member carry an extra codder pin on them at all times
