If took me about one year or so to be comfortable in a jet boat. Quite a few dents, running up on sand bars, sucking up too much gravel, etc. If you don't have a river pro, you simply can't cut corners as sharp, and that is the hardest to get used to. I've come to a conclusion in my boat that it's best to maintain just enough speed to keep you on plane and no more when you are going thru a tricky spot. The two worst scenarios are a 90 degree turn going downstream against a log jam where the water is only deep enough right up against the logs, and downstream in a rocky riffle situation. Couple that with the late in the day sunlight glare reflecting off the water and you really have to be on your toes.