hi everybody , iam beginner in freediving and spearfishing , and iam so confused between open cell wet suit & closed one . i know the difference between them , but i wanna to know some things to decide , at the first i want it for spear fishing in winter , the water is moderate cold here in sharm , Egypt . so which thickness I will need in case of Open cell 1.5 mm is good or 3mm ? , the other main question , can i use closed cell suit 3mm for ex : Aropec 3mm for freediving and spearfishing ? for a beginner will i face a fetal problems ? as open cells are so expensive compared to closed , thanks alot