I have been perusing through a host of different freediving schools in order to recieve some good instruction on technique and safety....though i am a spearo at heart, i dont see how a longer hang time and breath hold would hurt. Eventually i would hope to instruct other people on freediving and perhaps even spearfishing (maybe there is someone else who is as enthusiastic as i am about it!!!) So what are some good schools...i priced performance freediving and without a ticket to hawaii (the closest school) it would cost me over 3000 dollars to reciave the instruction i would like......are there any alternatives ...something more cost effective? Is there an internationally recognized certification for freediving ...as PADI is for scuba...what takes that place for freedivers? ....i know there is a few questions here but any input would help.