Frozen semen doesn't bother me one bit. Embryo Transfer certainly did and for quite some time too, though not so much anymore. I think that you're getting really close to hitting the nail on the head there Flashing. Early on in the piece I don't believe anywhere near enough credence was given to selecting the right recipient mare. IMO it's not only their size but their temperament & their age that come into play big-time. Above all else, I'd be very interested in the size of foals a potential recipoent mare leaves. Some big mares leave moderately sized foals, some smaller mares will leave big foals & so on. If for some reason we had to carry out an ET I'd seriously consider going as far as supplying our own recipient mare, one that we knew all about beforehand.