I have a 700 lbs lawn roller when filled with water. It would work better if it was a little heavier. So if I fill it with sand it would be about 1000 lbs, but how do i get it on the trailer. I am affraid going up the ramp it would try to flip the ztr over. Then I thought fill it halfway with sand and the rest water when i get there. But when I let the water out wont it pull the sand with it or is sand heavy enuf just to sink? I searched and water is 8.4 lbs gal and sand is 12.5 lbs gal.