Apologies for the mucky bike! I made two versions of my sugru mount. This one goes on the seat tube (with the Varia coming up from there, which looks quite neat and aero, and also works with my bikepacking seatpack that I used for a long trip on the summer). The other mount I made fits on the seat post. Essentially the sugru replaces the rubber insert that Garmin provide. It’s easy to make exactly the profile you want (and get the angle that you want). A couple of minutes with a Stanley knife after the sugru has cured to trim off any excess and it looks great. 3d printing is brilliant for making mounts to attach to GoPro mounts or saddle rails, but sugru is perfect for customer rubber spacer type things.