Ice block while diving

[grumpie]

Remember that warmer water is at the bottom and colder at the top, so as the water hit the reef or rock pile it bounces up hitting the bottom of the ice and wears away at it. the same thing with fish, they start the warm water moving and it rises to the top and wears away at ice.
If you cut weep holes about 25-30 feet away from the main hole the air bubbles will escape from under the ice and the main hole will not erode as fast.
Ice anchors should be at leased 15-20 feet away from the hole. Tenders should be tried off and wearing life jackets also.
grumpie.......