I have a Light and motion 90 degree wide angle Lens on a stingray housing on a Sony HDR-CX550V 64GB HD Handycam Camcorder. Regarding bringing additional equipment, Keep in mind the current is very strong at times, up to 2 knots, as that's generally where you get the big guys. You need to find a spot you can wedge yourself into or hold onto something with one hand and generally try taking pictures with one hand while fighting the current. You need to determne the amount of drag to carry, task loading, and ablility to use the equipment according to your setup and abilities. The hammers, as a rule, do not like the exhaust bubbles so will only come in as close as the person closest to them, so if your hanging in the back of the group try to get higher. Having said that I could get within 20-50 feet from them, occasionally 10 feet. The whale sharks and other sharks, manta rays, mola mola, etc. could come within touching distance. I hope this helps you.