Chocks that lock between adjacent tires certainly work for many but there are alternative solutions to securely chocking a trailer. Since I already owned a BAL single tire chock from my popup days I bought a second and used them to secure our dual axle hybrid for two seasons and for another two to secure our dual axle travel trailer, one BAL locked around one high side tire
and the second wrapped around one low side tire
. Our trailer sits on our significantly sloped driveway during the season so locking those tires down is vitally important if the trailer isn't to shift ... and it doesn't in the slightest with these BAL levelers wrapped around the tires.