Broker education and rigorous due diligence are the keys to running a successful subprime wholesale shop, experts say. “We have to be the loan police,” warned Glen Tarin, executive vice president of Florida-based Cimarron Mortgage. “It’s a double-edge sword. It’s very important and very dangerous at the same time,” added Howard Wegman, president of Creve Couer Mortgage, of the necessity of integrating brokers into a company’s lending strategy.