To modify the trap to utilize a spring pole mechanism, first cut a 2- to 3-foot-long flexible sapling or branch. Choose hardwood for its durability and natural springy wood fibers. Select dry wood rather than live wood, as it will spring back even more quickly than the wetter living wood. This spring pole can be finger diameter if you're using this trap for birds. Cut a spring pole that's thumb thick if you're going after larger birds or small game mammals. Whichever you choose, tie the thicker end of your spring pole near the top of the bird staff with strong cordage. I prefer to tie it in two spots instead of one continuous wrapping, as it seems to be more stable. Next, tie the end of your line to the narrower end of the spring pole. You'll have to experiment a little to get the cord length just right. You'll still need a knot in this line near the noose, to act as part of the trap trigger. If you can pull the line through the hole in the staff and get a bend on the spring pole while still being able to get the cord knot and perch trigger stick to engage, then you did it right. Make sure you tie the knot (which is part of the trigger) in a position on your snare line that allows the trap to set easily, yet receive the full action of the spring pole.