I did this about 3 years ago,, just for fun,, trying to do a few trick shots,, ( after seeing it some robin hood movi,
)
there were a few problems,, i found,,
1) you lost sooooo much speed,, halving the arrow speed,, is a lot,,
2) this bow i was using there was a little step on the sight window, on the risor, so the top arrow would go more to the left,
and i got all comfused with the aiming,, with 2 arrows ect,
it was good fun,, for about 5 mintets, and i even had to take a picute beacuse i managed to hit a tennis ball doing it,, but i soon took the second shelf off,,
allso one probem i had,, was i went to a 3D shoot, and the other competeters complaned beacuse they said that the second arrow shelf was a sight aid,,, so i very quickly took that off and poped it in my pocket, :D
let me now how you get on with it,,
have fun,, but definatly not a method for Hunting,
James