Being prepared to make deals quickly

[Lisa Mauritis]

How should I prepare to make deals (buying fix & flips and buy and hold properties) quickly.  

I will be in the area of the US (Miami/FortLauderdale) where I want to invest in fix and flips and buy and hold and I will be there for approx 2 weeks.  I am hopping to pick up at least 1 property.  I have cash money (hopefully only to use for down payment and repairs).  Aside from being approved by a hard money lender, how can I analyze the deal on the spot so that I can make an offer as soon as I see the property.  

I am trying to be pre approved by a hard money lender (if you are a hard money lender, please contact me).  I will be with my partner who is a building contractor (so he can determine the cost of repairs instantly).  How can I get comps in the neighborhood without the help of a realtor (just using my iPhone or my computer).  Also, is there anything else that I will need to know so that I can make an offer on a GOOD investment on the spot?

Thank you to all for passing down your expertise in this area.  I hope one day I can do the same for someone else.