2017 4Star 2+1 here and I adore my WERM flooring. At 57, pulling mats is the last thing I want to do. As posted above, I take good care of the flooring. I don’t leave waste in my trailer after hauling, instead cleaning it out after each use. I also close up my trailer after cleaning it up and never leave it open to the elements. My horses are also barefoot. Not the least bit of an issue and I highly recommend, and my spine thanks me.
Honestly having had other aluminum trailers with just rubber mats where anything and everything got between them and the floor, logically the WERM just makes sense. There are drain holes in the floor and nothing is trapped. Also do not miss acid treating the aluminum flooring periodically.
It is not slippery and I’ve not had any horse skate around on the flooring. I do keep shavings down that I pick and sweep out as needed. One of the best purchases I’ve ever made.