But what about frozen water?
With winter seemingly over in most of the U.S. I suppose I'm a bit of a Johnny-come-lately on winter tent pegs for camping on a frozen lake of even on frozen ground. We do an annual BWCA winter trip and this year the weather was predicted to go to -20 F. and I simply don't have the right UQ to handle that in my hammock...so we took my TeePee. I went to my local Ace and got some 4 in. long 1/4" GRK self-drilling screws with flanged washer type heads and hex bolt like drive heads. I also brought along a speed wrench (think good ol' brace and bit) fitted with a 1/4inch socket so I could use a spade wood bit to auger a hole into the ice so the self drilling screws wouldn't just crack and pop the ice out as they screwed their way into the ice. I tested all of this stuff on the frozen river that runs thru our property before we left.
I also needed to cable out my dog sled team, so here's what I did. I took some 3/8" lag bolts about 6 inches long and used a metal cutting blade in my 4.5" grinder to cut a slot across the threads on the lags so they would cut their way into the ice. Then I welded onto the hex heads some threaded chain repair couplings so I could connect and disconnect the cable leads that I hook to the dogs. They will chew thru anything less and be gone!
Both "staking strategies" worked really well and none pulled out. In fact, when we broke camp we actually broke off a couple of the 3/8ths lags in the ice. The grooves that I cut in the threads most have filled with water from the sun shining on the metal and they were completely frozen in. Hope this helps some of you next winter!