what do you guys do to keep your mower(s) from bouncing around on your trailers? i have a 6X10 open and i'm thinking about nailing 2x4 blocks to the floor to hold the front tires in place. (exmark lazer zhp 48''). do you think this will work? what have you had luck with? i don't like taking the time to strap it down after each lawn. thanks in advance for the tips.