How long should it take to finish a bay dog...

Put a harness on your pig or tie a board behind it to get tangled up. Spray your feet with scent killer and lay the drag. Hide the hog at the end and come out a different direction than you came in. Walk your pups down the drag line and let them work it out. If they roll off the drag line sit tight until they come back to it and continue.

Let them do the finding until they run the entire drag line without help. Then begin laying them further and further until there isn't any question. Break it up across water, thickets, pasture, and double backs.

When they do it perfect go put em out on a corn feeder that you know has fresh sign and get after them with as much heavy hunting as you can. Also dont hunt em with an older dog that is a crap eater it usually regresses them.
Good luck.