you should make it so the thermal can be held on by the 1/4-20 threaded hole that the MTM and L3 series thermal have on them (same thing camera tripods use). However, relying on only the 1/4-20 screw with hand torques use some sort of bungee system, zip ties, etc to stabilize/secure it from vibration. I know 1913 rails a much more resilient than 1/4-20 mounts, but just spit balling to try to make it adaptable to multiple thermal units. Larger adaptability can lead to larger markets and more sales.