Lefty there is no easy way to do lining drills,They are drills and they get very discourged easily just like children. If there is alot of pressure involved it seems to get worse fast. If there is more no's and less praises they seem to shut down. I would start close in the field and run it for several days until the dog is comefy with that distance and move. For instance on a three leg blind run the middle blind first total distance 100 yrds, don't set the side legs may cause confussion w/ a young dog. Place bumpers in a pile back up 15yds have dog at heel and throw bumper to pile to show the line send dog on name or release command.Then send dog to unmarked pile when returned on back or release command for blinds if successful move back 15 or 20yrds and send if problems arise move up or toss the bumper toward the pile and continue if farther out use handling. Use the same place to train this drill and master it before you add the legs to the drill,the legs will have to be taugt the same way and don't place them to close it will confuse the dog. Go slow and show your dog what you want and it will go along way. If the dog slows or spirt falls a bit throw a fun bumper to pep them up. Be sure not to overdue the dog it gets hot and maybe you will only get to the 50yrd marker on the 1st leg in a session. Lots of praise for good work and try using birds some too. Hope this helps and good luck and good training.