I am a novice hunter...this is my first season. Considering it is going to be close to 90 degrees on opening day, how long after a deer is killed before it starts to go bad? I mean if I get one (HOPING) should I be in a dead run to try to get to it and get it out or what? Any advice would be appreciated. Also, my local deer processor told me that they will field dress for me too....is that advisable or should I dress it ASAP to cool it down?