JamesK
Got to ride
I use the LegalSpeeding 8500x50 cover. Totally agree on the crappy material they use and the ridiculous price tag (for what it is/costs to make in China, like everything else).
I have the RD mounted on the RAM RD magnetic plate, so the only way to use the cover is by slicing off the folded over edges all the way around the cover. This way the cover sits over the RD and over the RAM magnetic plate. The RD is held in place with the metal plate supplied with the RAM mount. I use a velcro strap to hold the cover on, but a rubber band would work too.
In the past 4 years that I've used this setup it's been exposed to a lot of different severity rain storms and never caused me any problems with the RD getting wet enough to fail, at most the bottom of the RD plastic might get damp, but certainly not wet enough to enter the unit...
I have the RD mounted on the RAM RD magnetic plate, so the only way to use the cover is by slicing off the folded over edges all the way around the cover. This way the cover sits over the RD and over the RAM magnetic plate. The RD is held in place with the metal plate supplied with the RAM mount. I use a velcro strap to hold the cover on, but a rubber band would work too.
In the past 4 years that I've used this setup it's been exposed to a lot of different severity rain storms and never caused me any problems with the RD getting wet enough to fail, at most the bottom of the RD plastic might get damp, but certainly not wet enough to enter the unit...