MyFishFinder.com Just like iceshanty but warmer
We use 2 crampons that are usually used for ice climbing. They screw into the ice and we attach ropes to these, at opposite corners. They work very well holding our shanty in the stiff breeze at Newfound. You can buy them at EMS. When we move we just unscrew them and reposition when we get a new spot. They have worked great for the last 6 years. Hope this helps.
I looked at those once, until I saw the price: 4 of them were more than my house is worth! they called them ice drills