I've used mine once, with the laser aiming light. Had trouble with adjusting the laser accurately. Only one or two shots were actually lit on the subject. Also, if you want to have fun but not get the shot, Gobies treat a laser dot the same way cats do. The goby I was trying to shoot kept chasing the dot. Thankfully, Nudibranchs didn't. I didn't have any problem with the unit falling off my YSD-1's. I haven't tried it with the strobe aiming light. I'll have to see if that works better.
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