I use these in all of my boots I wear for ice fishing. I noticed with the lack of snow the last two years that they were slipping more, so I've replaced them on my main boots I use for ice fishing.
They are Kold Kutter Ice Racing Screws 3/8".
They are very comfortable to walk or run with and no pressure points. Using this method also allows custom contact points such as heel and toe where it is crucial to have good anti-slip protection.
I use about 50 per boot for more contact and to spread the pressure points out and it helps more when stepping on raised ice near ice holes where the slush turned to ice.
Never had a leak from using them and I installed them into several pairs including mickey mouse boots. They will lose a few per season, but easily replaced and inexpensive.
Tip is to run them in at a wrong angle part way and then straighten them to the correct angle and finish driving them in, but don't strip out the hole by over tightening them. Try to finsh so that the slots face the sides of the boots for best traction.
You can wear kleats with these if you need too.
I've replaced my main boot screws because I would use them for shoveling and snow blowing and cement has worn them down too far. It took years to get them worn so badly.
