What is the easiest way to level my travel trailer?

I have a 26 ft travel trailer and want to know if there is an easier way to level the trailer. I have manual crank down jacks and they tgake foreever. If I pjt a level in the middle od the floor of the camper would that be true level?What is the easiest way to level my travel trailer?
Get some safety jack stands, and start from the rear of the trailer first, by using the tongue jack.What is the easiest way to level my travel trailer?
you need to rethink your plan, its not that hard. you take three measurements on the front across the tongue for the side to side is one, across the back bumper for side to side is two and on the outside between the two wheels measure front to back level using the edge of the plastic fender. I get the trailer off the truck, crank the front of the tongue down below the hitch ball down low so the rear of the trailer comes up, ok? eyeball the two jack stands and stick them under the frame next to the bumper one on each back frame rail, . then jack the front end up, until you get the front to back level. you with me so far? go back and read it again, then go a bit higher on the front this time and put the two screw jacks under the front one on each side, and let the tongue down on the stands. Now its closer to being level both ways, and may need a little fine tuning. I used five gallon buckets to store the screw jacks, and those sorry sewer lines.and the hose ends, for traveling, the buckets can do double duty as trash containers in camp. just set the the buckets right in the bathtub when traveling and then set them outside when ready to set up. Its a good idea to bring adapters for your trailer plug some RV places are 30 amp and some are 50 amp and invest in the scissor like support for the sewer lines so the fluid has a straight shot from the tank to the sewer hook up. If you just let the lines lay on the ground full of yuk. they will rot really fast and are ruined. You also need to check and seal the roofs of a travel trailer once a year or so. I paid a friend who knew what I wanted to go up and seal the roof with this thick goo called plasticote every two years. Any time you move a travel trailer, the road literally pounds the crap out of your trailer. and leveling the trailer does different stresses to the whole trailer because it is kind of flexible anyway. to do the roof its best to never step on it. but find a thick plank that will go across the trailer from edge to edge. sit on that and do two coats of plasticote so the traveling does not pull the seams apart and then rain water runs down and eventually will rot a lot of the trailer floor over time. It does not matter, old or new a highway and city streets are much rougher than people think.