Hi ,names Vaughn , I'm 62, have a Hunter Legend 37 yacht and I've just begun spearfishing again after a number of years , while I am cruising around these tropical islands up here (Barrier Reef) ,am looking to find out where I can get instructions for a 97 Cyrano , Mares , speargun . I found it washed up on Palm Island , I have had it serviced , new spear etc and it works well but I'm not sure how many pumps I should use . Apparently I can go to 1100 but I'm a shallow diver (no more than 6 metres ) and I don't want to be overpowered , I have it at 400 pumps at the moment and it seems quite powerful . I have only used rubber before . Cheers .:wave