getting outran!

The biggest factor I have seen in running hogs is terrain & that is what determines if a hog stops or not. If you cannot break that hog out of that trot, you will never catch up to him. Fast dogs with a lot of bottom is what will make some hogs stop. A lot of hogs will run to the thickest area they know to stop & bay & some are just going to run. The only way to stop them is to keep the pressure on & like Goose said: relay them.
A good example would be one of the places we hunt is the mixed marsh & swamp. Early in the year it is very thick & the dogs cannot open up & run. If you get on a runner you can for sure get out run. By middle of Dec. & later after a few frosts, those dogs can open up & there are very few hogs can outrun them over a few hours & they have to stop & bay. That is why I think dogs determine if a hog stops & bays. But they have to catch up to them.
We have hunted in several fox pens where hogs have gotten into them. Those hogs have been hunted by other hog hunters & run every night by fox dogs. At one pen we were about the fifth set of hog hunters to go in there to catch a big boar. The dogs caught him where they jumped him at but he cut the fire out of several dogs. Another fox pen we relayed dogs every time they crossed the power line. We started this big sow at about 7:00 am & finally broke her down & caught her around 4:30. It was so thick in there, the dogs faces, literaly looked like they had been skinned alive from the briars.
The bottom line is there is no quick fix to running hogs. There are to many different scenarios but if you cannot break him down you will never make him bay. JMO