Clam™ Ice Anchor Kit. Batten down the bobhouse! Click image to enlarge... Clam™ Ice Anchors keep your portable ice house rock-steady and squarely in place! The self-tapping, specially-tooled spikes go into the ice easily, and hook to the sled with a quick release nylon strap. Get your Kit here and rest assured... or fish assured... that your ice house isn"t going anywhere! Includes 2 spikes, 2 nylon straps, and mounting hardware. No more slip-sliding away! Order yours ONLINE today! Clam™ Ice Anchor Kit