[Fishwhere]

I like the pre-tied ones on those hollow straws and they are multicolored pink, yellow, orange. Make sure you use the beads. The least likely bobber stop to snag on your rungs for sure.

Not sure about really heavy weight in deep water, but i think should be ok. If your hook is your weight then you obviously will know if your hook is on the bottom or not depending what your bobber is doing. May also be worth thinking about a rig that could cover water a bit better and keep you a consistent distance off the bottom - forgot the name but something with the weight on the bottom and your hook above at whatever distance you want. Not a pickeral rig with the loose ends hanging off like a disastor waiting to happen. I think its a bass/crappie set up but should work good on wally too.