I tried to go back and pull some old post for you but was not able to go back but a page. This has been discussed several times over the last year so you might want to try your own search maybe you can locate something on here. If not a few good places to begin are
www.unitedbloodtrackers.orgThis is a national tracking organization formed for promoting the use of blood tracking dogs.
http://www.hillockkennels.com/Training_your_blood_tracking_dog.htmlThis is a section on my web site.
Also if yopu have not already done so purchase John Jeanneney's book Tracking dogs for recovering wounded game. This is an excellent book for anyone interested in tracking dogs.
http://www.born-to-track.com/book/order-info.htm