It has always seemed to me, that if you know one guy that's let say "B25 Qualified", then he knows someone else (somebody had to teach him), & that guy knows another guy, & so on. Like a lot of things in the aviation community, a lot of info can be gained by word of mouth. Now for the tough part. A B25 is not too hard to find a qualified pilot for but say a B23. 20 something years ago we had some trouble finding & getting people qualified in the ole Dragon, I could only guess what it would take now. (I still know of one or two of my Hero Pilots could still do it) Lets face it these planes are getting older & our qualified types are getting older too. The other deal is being able to find guys that are avialable. Most Warbird pilots I have known have to work for a living, & they can't always drop what they are doing to reposition an aircraft or fly an airshow. There are a lot of factors involved getting together a pilot pool to fill your needs. And one more thing. If you get an operation going, make sure you have equipment that is safe & taken care of. If you got junk, anybody thats worth having won't fly it, & the word travels fast who's operating junk. Its a hard reptutation to shake. Thats just my 47 cents worth.
Robbie