Timba, have posted this a few times, but will do it again for you. get the archers flame nocks. they ALL work every time. and they are made to fit the arrows you shoot. shot each one of the ones I bought over 200 times each, and they lit every time. just as bright as the lumenoks, and cost a little less. $25.00 for three of them. when I hit my bear last year, the arrow ws found in 3-4 inches of water and the reason they saw it was because it was burning nice and bright. the address is:www.archersflame.com
. good luck.