I had customers like that when I was a wrangler at the dude ranch. The city slickers looked at the horse as a ride, rather than something they had to control. Boy, did the horses take advantage of those people. If the rider wasn't willing to sit up in the saddle, take the reins and guide the horse, they were in for a hard day. The horses would try to rub them off on trees, would wander off the trail to graze, would stop to scratch their bellies on low bushes, or would find low-hanging pine tree branches to test the flexibility of their riders. Much of our time as wranglers was spent rounding horses and people up and getting them back on the trail... and more than once, chasing down a runaway horse that may or may not have lost its rider at some point.