I think more people do not understand the risk of seller financing. all the people I see applying for seller financing could not get a visa card there credit is so bad and there savings is from the pennies they find walking down the street. 

Jonathan,Unlike credit cards with "Intro Rates", HELOCs are a standard banking product. 

Cancellation policy is full refund less cancellation fee of $200 and any credit card fee is cancelled greater than 60 days prior to arrival, 1/2 refund of total if cancelled 60-30 days prior to arrival and no refund if cancelled less than 30 days prior to arrival.

I also do a Christmas card with some cash at the end of the year. 

And to @Jay Hinrichs's point, I see no safeguards for gators when teaching about gap funding, EMD funding, or any other tactic that they try and sell which tells you to get 0% interest credit cards and build business credit to be used to lend out.

what is the best way to fund renovations on a flip project (other than cash)hard money lender, line of credits, credit cards?

I also got a business credit card for buying things related to the rentals. 

It can be as simple as a binder, business cards, poster etc in the unit. 

Hello BP,Are there business credit cards that don't require a personal guarantee?

We keep our list in SharePoint and every quarter we grade them like my kids and have a report card.