These are a must anytime you head out on your Denali Evos. I throw 'em in my pack and they'll be ready for me to head off-trail to into deeper snow. They are easy for me to attach and detach, even with a full 40lb. pack on my back.

I used the tails in a Memorial Day weekend mountain climb of a 14teener in Colorado. The tails performed as expected. They added about 30% more surface area, distributed the same weight over a larger surface area and the lower pressure resulted in less sinking into the snow. I was able to skim over most snow fields with minimal sinking. They were a detriment on very steep terrain where I had to kick step my way up in soft snow because I did not kick deep enough for the tails to add support. They just added drag in that situation. They were a little hard to attach in the field while wearing the snow shoes. Since the snowshoes are easy to remove and put on the middle of a climb, it is probably better to remove the snow shoe, put on the tail and then put the snow shoe back on, rather than go through the contortions of attaching the tails while wearing the snow shoes. Bottom line - a good addition and worth the added weight and bulk for soft and deep snow conditions.

great uses :
* not sinking in the deep
* cutting board
* mine are bigger

I can't say much to others who say these tails don't add flotation...but what I can say is they saved my backside more than once.

I've put in many miles traveling on the Kahiltna Glacier (Denali NP) and have walked across many snow bridges with these things on. Although I won't tell you I'm not lucky, I will tell you the guy on the other end of the rope who was too cheap to buy these tails needed me (and my Flotation Tails) to pull him out of two separate crevasses.

I find that the tails actually don't help all that much. I had the same issues in deep untracked snow that I had without the tails. In fact it was worse because with longer tails there is more effort to drag them through the snow. I would just stick with the regular shoes and save the cash.