Do you use leveling blocks on gravel?

[dgood7]

I am a real newbie, taking delivery of a 2014 Challenger 37 GT last week. The site I am on is gravel and very stable. Should I use leveling blocks and if so what will hold up to a 38 footer?

 

[fhenn]

My fifth wheel is 36 feet depends on the site weather I use them or not. If the site is level than no, if the site is badly out of level than yes

 

[asquared]

I use leveling blocks if out of level. That is on gravel, grass, dirt or pavement. If you are level with all slides deployed then you don't need them.