OK, here is the next prototype. Quick and dirty still, but a bit more elaborate than the first experimental test setup. It is a full frame rather than an add-on now. This allowed me to lower the forks a full 2 cm, in fact this is the lowest possible position of a whisker biscuit over the fist. The handle is a full blown Rambone (what else). I also deepened the tunnel to the full 54 mm (3 layers of 18mm multiplex). The two layers of the last iteration still sometimes allowed the string to touch the bristles of the whisker biscuit, now that won't happen anymore. This is now getting really good. While it looks top heavy, it is really not - the ring is mostly hollow. The low fork will allow me to go up in rubber power, probably shoot 55 lb bands. That should make this baby quite acceptable, for a slingbow. Accuracy is really good, which is probably due to the clean arrow release. The long "tunnel" does a good job in that regard. What do you guys think?