I found the Drag Bags helps a lot on a hard launch. The key I found is proper tire inflation which I lower to 16psi on the Nittos in combination of 12 lbs of air in the bags. If the tires are not heated properly you will still get some wheel hop, but NOT as bad if I didn't have them. In other words, yes they DO Work/Help.
How are those drag bags, i was told that is probably the one of the only ways to stop the wheel hops