RE: slider sight?
Icurrently shoot a vital bow gear pro-slide and like it a lot, but if I had to do it over again I'd pay up for the star-tac model. Those fiber optic reference points would sure com in handy in early morning or late evening.
This hasn't been an issue for me though since I set my slider at 20 yards and leave it there, don't shoot too far past twenty for it to become an issue. I did slide it to~30 once last year on a stand that put the trail a little further away out there than normal.