Long since are the times when my Garmin was DIY mounted. Instead, I now use a couple products—Bar Fly 3.0 and 2.0—that are safer, more secure, and sharper than my once janky setup. Not only do they have models to mount Garmin computers, they have models that are compatible with most every cycling computer available. If those weren't reasons enough, Bar Fly offers a crash replacement: If you break it, they'll replace it. Thanks Bar Fly! 

-Rainier