I will park where the trailer is at its most level, and then I use a tri-leveler..
I have a triple axle trailer so I have three of the wedge shaped tri-levelers, but I had to cut the short end off of two of them so that they would fit between the wheels so I could drive up on them, as they were longer than the wheel spacing.
most times I only need one, but sometimes two of them... rarely do I need all three to bring the trailer level.... but I also carry extra blocking that I have had to use when we were reduced to staying in the most unlevel site in a campground...
I used to always use wood blocking, but it often breaks so it needs replenished sometimes, and is always dirty when its is wet or placed on gravel...
I then tried the lynx levelers, but in my opinion, they are too time consuming when setting up and when putting away....
by using only 2 easy to handle and use tri-levelers, I have enough height options about 95% of the time... and if one pays attention to where they park, one tri-leveler will work 70% of the time...
the more axles you have, the harder it is to get level, and the more important it is to have the easiest to use blocking to do it.