One thing you may want to think about is if your a good enough shot. Not trying to slam or anything, but to lose two deer in one day is pretty bad. You have to be sure your shot is a good killing shot(double lung), and that you can make it every time. PRACTICE! Also, as for trailing deer, find someone who knows what they are doing. This is the only way you have a chance to learn without losing alot more deer. What kind of broadheads are you using?