I think all above is good advise. Id like to add that when the dog is young you want to make it easy and get your pup interested. I use blood, hide, bone and meat. I always treat at the end of a training track with meat. I advise as you get going with it to take a couple of tennis balls and put them in a ziplock with some hide and meat. Take them with you to train and start playing with the pup with the ball. As you get more advanced throw the ball into the woods and let it bounce off the trees and simulate a deer darting randomly. As you make it harder make some drags that crossover each other. Id also recommend that when you get advance use someone your pup doesnt know to do your drags and make sure to cross different surfaces including water. I could go on and on but thats my 2 cents. I have 2 trained Bloodhounds.But my lab works out training tracks faster then them. She works off lead so she doesn't have a slow handler slowing her down.