I rewatched Mike Lardy's Fireside Chat, Disc 5 of TRT, a little while ago. One of the things he discussed was his approach to cold blinds and why he doesn't go straight to them after double T and swimby.
His Transition land sequence is:
Pattern Blinds with diversions
Elementary Cold blinds
I understood what he was saying but don't know if I can explain it as good as he did.
He said a long while back there were the collar trainers and the no-collars trainers.
The collar trainers said my dog will now take the casts and I can go right to cold blinds as they will go anywhere I want them to. Lardy said he has watched this and the trainer following the dog out blowing a lot of whistles, etc.
The no-collar trainers believed in teaching as outlined in D.L. Walters book on Training Retrievers to Handle with lots of patterns and walking baseball.
His conclusion is that you should use the best of both approaches.
Dennis Voigt was a part of the fireside chat and maybe he can explain it better.
The reason I made this post is that I suggested someone do pattern blinds first before cold blinds and another person suggested I was........ well, they disagreed.
I expect some will still disagree but it should make for an interesting discussion.