Getting deals under contract without POF letters

[Andrew Halbert]

This may be a silly question but I don't care I  am going to ask. :) 

When using a Private or HML, how are you guys/girls getting contracts written up without a sufficient POF letter? What I mean is, There are several private lenders and HML I have access to who require the property to be under contract before funding the deal. I have worked with several different realtors on MLS properties and they all have required POF before submitting the offer. The last deal we did off the MLS I had to jump through a bunch of hoops because the listing agent would not accept our offer until the POF came through, even though my realtor, which we've used several times in all cash purchases, vouched for us and funding capabilities. The listing agent didn't care, they wanted some kind of bank statement with my companies name on it.

So what am I missing?