the break out force of a mower like a ZTR coming to a sudden stop, say, on the free way would far exceed the 2000 lb limit of the little ratchet strap, it would go flying anyway. It will probably work for a push mower. There is TONS of crap in the back on pick up trucks everywhere. Do you think every tom dick and harry straps down the random bricks, shovels, and what have you back there? Nope. no one stops every pick up out there. they are looking for yahoos that give them an excuse to pull you over. If your mowers are sloshing to and fro every stop light, the DOT doesn't have to snag you a regular cop might. this is another reason all together why I just plain hate trailers, at least for mowers.