GG~~Wow, I've influenced a real pro? I'm humbled...really. I've got ideas on how to modify my launcher to incorporate your suggestions. The keyring for sure. Then maybe braze two eyebolts (small ones) below the rails on each side out closer to the ends (depends on the length the bands will stretch), right up just an inch or less below the launch surface...not 4 inches below as the rubberbands are attached now...will produce the more linear pull. Then use TWO bands, one on each side tied into the keyring...twice the force at nearly level with the bottom of the bird...SWOOSH! I think it should work. Probably just before reaching the band attachment points, the keyring falls off and falls below the passing prop. Tahdah! I think your truck bed idea is a good one. Drawback that I also face is having to align the car or truck into the wind. Not rocket science and in my case where I fly in a farmers field, parking this way or that is not an issue. WC [sm=bananahead.gif]