Well had a great day some very interesting talks on varroa, from DR JOHN KEFUSS. He gave up treating for varroa in 1999, and still doesnt treat. Some very interesting results.
On another note Thornes were there selling some equipment for less than their sale prices, so some bargains to be had. Nat brood boxes for £15.
Unfortunately those that are like-minded are in the definite minority at the present time.
Most want the maximum honey crop (regardless of suitability of the queen for other traits) or want to market their queens for anything but varroa resistance at this present time.
Things may (hopefully) change in the future, but that is the bottom line at the present time.
Unfortunately it may not be that the best colonies to breed from for resistance to varroa is in that top 100 hives. As you point out, for most on here, that would be all of them and then some! Even selecting 20 is beyond most on the forum.
Did he use II for transfer of this good trait?
Simply better that everyone tries to find at least one colony and try to improve on it. then we might need to put any promising colonies together on a site for more improvement. Thoughts?