hear about this every year when we have hard ice then rain/warm spell people have to push the limit just to catch a fish.. my Dad used to do the same thing, go out on ice when there was 2-3 in of water on ice until one year he started out on ice and it gave way under his feet with zero warning, luckily his feet hit bottom with his nose above water.. he managed to get back on ice and crawl to the bank..never went out on bad ice again said he had been pushing his luck long enough.