I have to put my vote in for the side kicks as well. used the spring type for years and one back up with reverse, and they are toast. Also a pain to mount on a 121 skid without removing or moving bogie wheels. Sidekicks customer service is great as well. I screwed one up and got it stuck on the trailer and ripped it apart. sidekicks replaced it no questions asked. Side kicks are simple to mount, easy to store up and you can back up with out storing them. they work in our hard pack and frozen lakes so far.