A gent with the nickname "dgui" designed a so-called "pickle fork shooter", essentially a simple board cut frame with really low and narrow forks, OTP attachment. It shoots because of the flipstyle effect. Much like a stickshot, but without the need for a paracord loop.
I always liked the simplicity of the design, plus the effectiveness. However, I am a firm believer in the superior power of the hammer grip shooting style, simply because it allows you to draw out stronger bands.
So I combined the low, narrow fork with my favorite hammerhead handle. Carved it out of a single piece of European Dogwood (cornus sanguinea).
It shoots fantastic, of course you have to flip it (automatically happens with strong bands).
I must say that some day, I will have to make myself a knife with that handle. It is simply the most comfortable design I came up with (so far).