By wheel hop i assume you mean the typical SD bounce that occurs? Wheel hop is usually refered to the situation that occurs on take-off or under heavy braking at higher speeds. True wheel hop (as mentioned in the later) usually isn't considered much of a problem or a concern with the SD's. This is usually more of an issue with lifted trucks with larger tires that are used for off-road or competition and can be cured by the use of ladder/traction bars as you mentioned. If used for highway/road applications it can create a very harsh ride depending on how they are set-up, adjusted or used with other associated hardware.

If it's the more popular SD "bounce" you are refering to it can be difficult to eliminate and is a normal attribute of most pick-ups especially long beds. You can try experimenting with different tire pressures, loading the bed or changing spring/shock types and rates as you mentioned. These can also change the degree of true wheel hop as well. If you mainly use your truck for on road i would consider not using the bars or at least research several types for their expected performance and usage before purchasing.