Hello,
I put them on my I-17 2 years ago.
Nice system, Works everytime.
I like that the ball stays in place even when out-of-tension, [ one can tweek this by putting tape under the ball , to your liking]
Yep. went on a budies Fox[ hook system], and 'holed' the darn thing with my hook,...makes a real nice hole fast!
regards,
Bruce
St. Croix
USVI
I-17