coil spring rubber spacers

I have a 2013 Sportsman 850 XP EPS and just returned from an awesome trip to the Hatfield and McCoy Trails in West Virginia. A few times I bottomed out and have been considering using the coil spring rubber spacers on my front shocks. I have them turned all the way up, but on occasions it still bottoms out. I would appreciate any feedback from riders who have used them.
Thank you