Been using Luminocks for a little while and I really like them but one thing they don't do for me is to enable me to follow the arrow flight.
Stryker380 shoots and presto there is a luminock lighted up sticking in the ground or tree. For me it is too fast and I figure if you can watch the flight off one of the crossbows good for you!
Where it becomes important to me if the shot was questionable I can instantly check the arrow and from the blood on the arrow and the smell determine if I instantly track or back out for awhile. IMHO