Out of State Investing Question

[Moira Mosley-Duffy]

I am a beginner in out of state RE investing and had a question for those doing out of state investing:

Do you always send a RE agent to check out buildings before making offers? 

After I crunch the numbers and check out images I feel fairly confident in sending an offer (especially because so many of them would likely be turned down) and I don't want to have my agent running around like crazy to look at places, 80% of which wont accept my offer.