Yes marbles! Really do a number on snakes. That's a nice one!
I may try the lanyard myself, bit my builds keep getting more and more ergonomic, which has doubled my accuracy. I use theraband but also have an old marksman wrist rocket. I may try bending the ends outward and switch from the slower tubes to bands. The wrist rest makes up for any lack of ergonomics and I see a very similar one sold at WallyWorld.
Edited by Gary Chandler, 14 March 2017 - 07:31 PM.