When we pull in to a site, I check the bubble levels in the cab. If they're hard up against the ends, we ask for a different site or go looking for a different CG.
The only place we can't do this is when we visit duaghter and s-i-l and have to park on their driveway. We have to get the front wheels about 8" off the groundto be level fore/aft. Obviously, I don't back in, otherwise we'd have no parking brake. We need a two-step bathroom step-stool to reach the RV's bottom step!
I'm not sure if the front suspension will suffer long-term damage from hanging out off the ground.