I have a light on my sight that is just a threaded knob that holds three $5 watch batteries. Lousy design as it does not have a positive lock type of switch. I hate having the cap rattle off when walking or the thing twisting itself on and burning the batteries out. Is there a better light made now? I need it even in the daylight if I hunt my DB blind. Thanks.

What kind of sight do you have?

Mike-It's a Cobra five pin with the metal frame that is slotted for the cobra light. Must be a better light than that one. Thanks.