I just am getting in this sport and just bought a Sporasub Aspic 55 for spearfishing around some local jetties and maybe a rig or two i live in texas so the water is pretty merky so i was told this is a good gun im now just wanting to find a replacement shaft just to get a price. any pointers for a starter would be great also.... like what kind of addons and other good spearguns i could look at that are cheap... Thanks