Liquid Force 8" Retrofit Angle Wakeboard Boot Lock 2010: If you are putting 2010 Liquid Force boots on any non 2010 Liquid Force wakeboard, you may have limited stance options unless you add a Retrofit Lock Kit. If you have 2010 Liquid Force Boots or are considering getting some and want to have all the stance angles possible, this kit will allow you to mount these boots on a 7" or 8" insert pattern board.