calling on lost dogs

Yeah we went huntin this wkend and i dont have a tracking system yet. We were hunting a piece of land on the navasota river and i really didn't want to go down to the river bottom for that very reason. after two unsuccessful runs on the high ground we decided to down by the river. and low and behold they get on a hog and were gone probably 2 to 3 hours. finally one dog showed back up and it was gettin dark so i left my jacket and headed for the house. when we got there one of the dogs was at the house. and an about an hour later the other one showed up. They were all soaked head to toe. I believe they crossed the river. I thought that were about to lose 3 dogs. Aint doin that again, I promise you that. I learned that RIVER=TRACKING SYSTEM