Are those projectiles arrows or bolts? I have always thought an arrow needed to span the fully drawn bow, from string to brace.
How do they draw a bow that pulls over 300#s?? Even with all four limbs, thats a tremendous amount of strain.
Do they get to use an angle gauge on the shooting device?
Does the projectile ride in a track?
I'm also really curious about the ASL the other guy is shooting. The limbs are vibrating like crazy in that picture.
Alan will probably check in eventually, but I know some of these.
1) How do you define the difference between arrow and bolt? I would call these arrows as they have a nock and attach to the string as usual. They are very short, though, more like big darts than a traditional arrow. They use an overdraw shelf to allow them to draw more than the arrow length. I don't think the arrow rides in a groove but I am not familiar with the details of Alan's foot bow.
2) Drawing the bow is a similar motion to doing a deadlift, but while laying on your back. The draw is relatively short, so you aren't pulling through a huge range of motion but it is a significant grunt no matter how you look at it. I expect Alan does strength training with weights to be able to handle the draw weight.
3) I'm not sure on the angle gauge. I think they have a spotter watching them and giving them instructions on where to aim left/right, elevation, etc.
Mark