Lots of good advice. Bell is correct with getting them worked up. If my buck runs the pen two or more times he does not get darted. I have done a bunch of collections and with those type of animals you either get nothing or end up darting reversal. Make sure your tech gets the penis unsheathed. Adds a bunch of junk to the collection otherwise. As always monitor temp, breathing rate, tongue placement. Bell also brought up fluids, we give 1000cc every collection. Do not give until after collection! I always give b-complex, prevail, and ADE. If you have given nuflor recently do not bother collecting, because that stuff kills sperm! Good luck!