here's the one Matt uses:
Shakespeare LCM-1 Line Counter 
Shakespeare line counter features:
- Easily attach to rod.
- Accurate line depth control up to 999 ft.
- Push button quick reset.
- Heavy duty rod clamp.
- Manual or automatic line release.
The Line Counter M from Shakespeare showcases an automatic line release for when you're fighting fish. The adjustable release pressure is designed to fit different fishing conditions.
Not a bad price... $15...