I gave all shots in butts when I just got my horses. Just for that very reason - I was too afraid to give in neck and I couldn't use vets because they had no training what so ever (didn't let vet come close). I know butt is not the best place to give (and it may cause pretty big abscess), but still was a better option in my situation.
"Life isn't about waiting for the storm to pass: it's about learning to dance in the rain..."
"When we are no longer able to change a situation - we are challenged to change ourselves."
"How people treat you is their karma; how you react is yours."