Jim Hoag was THE MAN when I was shooting IPSC in Southern California during the early seventies. Ray Chapman was associated with Pachmayer at the time, but many, if not most of the real players in the Southwest Pistol League used Hoag.
Jim built my first custom pistol; a "B Class",on a commercial series 70. Not suprisingly, it was similar to Swenson's work, i.e., S&W sights,commander hammer,etc, except that it was blued and did not have an ambi safety.
I later ordered and recieved a Hoag "Master Grade". This was Jim's full house, best quality gun, with low mount BoMars, Bar-Sto barrel etc. Standards are higher now, and it would probably suffer by comparison with some of todays best makers, but at the time it was cutting edge and I thought it was exquisite. I regret to say that I got caught up in trap shooting, and sold the Master Grade to a friend in order to finance a new shotgun.
Years later I came to my senses and tried to buy it back, but the fellow I sold it to had sent the gun to Hoag and had both a six inch long slide and a commander top half fitted to the frame. Naturally, he had no interest in parting with it.
To this day, it remains near the top of my "I Never Should Have Sold That One" list.