Anyone have any idea how thick the ice gets during the average winter? I know it can vary, just wondering if it's 1/2" or 5"...I'm in central PA, near the MD border. I think I'm going to need to drain some water soon. I have a mesh cover that's weighed down ice after the big snow, so I don't want to take any of the anchors off now- the springs are really loaded. I'm wondering if I can easily break the ice and use a submersible pump after the cover ice melts.