Using appropriate equipment is of critical importance to be sage while free diving or underwater hunting. I can't tell you how many times I've heard of equipment failures that resulted in close calls and potentially very dangerous or even life threatening situations. I will cover the relevant equipment, pros and cons, what I use and why, in the following equipment sections.
Underwater hunters should use a low-volume (close to the face) style mask. This style mask will be the easiest to clear and provide the widest possible rang of vision. It’s very important that your mask fit well to avoid escaping bubbles and (noise). I prefer the black silicone type mask that provides the least side-glare for clearer images and silicone seems to be the most durable.
The ability to see images at the edge of visibility may be the most important skill of the successful underwater hunter. Distinguishing images at the edge of visibility allows you early preparation for diving, stalking, and the shot.
Many divers use a number of mask anti fog techniques and products, from anti fogging gels to rubbing spit or saliva to sea kelp on the lens. I have found that rubbing one drop of Glycerin on each lens should do the defog trick. I have developed a very good product for cleaning and defogging mask lenses.
NEW CUSTOM MADE COMPOSITE BLADE RUBBER FINS
I prefer the longer fins for free-diving or underwater hunting in open water. They provide much better propulsion and transfer of power. Blade stiffness should be considered for different leg strengths. For deep diving, a stiffer more powerful blade may be necessary to propel you out of deep water and negative buoyancy. For shallower diving a softer blade may be more comfortable after many hours in the water. For bottom hunting, a softer shorter fin may be more appropriate for turning and maneuvering. Remember, the fins must fit well for comfort and prevent foot blistering and avoid squeaking (noise) as you swim. If using strapped fins, be sure the straps are turned inward and or taped down to avoid fouling in the kelp while swimming.
New hybrid fin
I have developed a new hybrid fin with fiber blades rubber coated that fits my foot comfortably and performs extremely well for deep diving.