Tom MacW:
At this point this is only somewhat speculative on my part, but....
"Did he incorporate his theories into his designs? Examples?
Yes, he apparently did but to what extent he was able to is probably the best question (we all should probably know that basically golf architecture has been somewhat limited as to AVAILABLE functional WIDTH for perhaps ever in America!). There was some photos of Rancho Santa Fe (I think it was) recently and TommyN explained the way some of those holes used to be before tree planting and other redesign efforts. But even with the way some of those holes still are one can see on some of them what appears to be some serious width creating many distinct lines of play from particularly the tees---things such as alternate fairways et al.
“Did he begin sharing his theoies prior to, during or after his design career?”
I believe GeoffShac is beginning to feel and find evidence that Behr and his theories may’ve been a bigger and more direct influence on some of the thinking of Mackenzie and Bob Jones than previously realized. I believe that Behr may’ve begun writing his essays on architectural theory and principles due to the request of Charles Piper that was in the form of a questionaire sent to all American architects in 1921 to write about and explain their theories on the principles of golf architecture. The reason Piper did that was he was trying to find all available information to put into the USGA Green Committee monthly bulletin that had morphed from an independent golf agronomy bulletin into the USGA and in 1925-6 was to become the USGA Green Section.