Do I need use one or two X-chocks? I have always used plastic wheel chocks to keep TT from moving when camped but like the between dual wheel X chocks.
We use a pair of them but have the BAL version manufactured prior to the X-chocks, 13 years and still going strong. Our TT is 33' and they really take out most of the movement when walking around inside our rig, we also incorporate the regular plastic chocks when camping on uneven terrain.