Personally, I use 3M VHB "Red" double-sided tape. It's neat, there are no mounts, frames, screws, etc, and once it's properly adhered, it's on for good. Well, at least until you have a spare 30min and some fishing line
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Get it on ebay: Genuine 3M VHB Tape Sheet Mounting Adhesive Double-sided tape 100mmx100mm | eBay
Oz
Get it on ebay: Genuine 3M VHB Tape Sheet Mounting Adhesive Double-sided tape 100mmx100mm | eBay
Oz