Those chocks will work well for "chocking" the wheels, but will not prevent the trailer from moving while set-up at a camp site.
Most people want a chocking set-up
that will help prevent movement while walking around in the trailer. A clamping type wheel chock is best for this, whether it be homemade or store bought.
"It is What it is."
2006 Chevy Silverado Z-71, 4X4, 5.3L, 3:42, 100% Amsoil Lubricated
2005 Jayco Talon ZX24-E Toy Hauler
Prodigy P2 Brake Control
15K Putnam XDR Class V
10K Equal-i-zer WD Hitch
Firestone Ride Rite Air Bags
2005 Kawasaki KLR650
2009 Doodlebug Mini Bike