FINS
There are quite a few long bladed fins on the market. Almost all of them will work well for spearfishing. If you're hunting in less than 20m (60'), a "soft" fin is what you need. The most important factor is FIT!! Your fins MUST fit your feet PERFECTLY. Too tight, and your feet will cramp up, conversely, too loose and you'll get blisters and probably lose your fins. So simply visit a dive shop and fit on as many types of fins as you can. Since almost all spearing fins are closed heel fins, so you'll have to wear neoprene to socks. Fit the fins on WITH your neoprene socks on. There are very few open heeled long bladed fins on the market. These tend to lack the power of their closed heel counterparts.
Some of the most popular brands are:
Picasso black teams - great for guys with BROAD feet (like me!!)
Omer Millenniums
Cressi Gara 3000's as well as their 2000's
There are a multitude of other great fins in the market, so do a bit of research on
www.deeperblue.net for a more in-depth review of fins.