At the same time, I have read many posts on BP regarding co-signers and there seems to be more bad than good.Looking forward to hear your thoughts, thanks!

Unless you find a good local partner or the market gets bad again.

@Jay G.In my experience listing agents want the TDS in the buyers hands as soon as possible so buyers don't have the right to cancel beyond the inspection contingency.If the TDS doesn't hit buyers hands early it's generally because seller is slow in completing it because they have so much else going on.Have you had a bad experience with this or are you simply trying to understand the process?

a bad deal? 

Obviously when markets have begun there fall flipping is a very bad idea.

@Aaron Porter it’s not bad, I think you could get around the 5.5-5.7% neighborhood on a 30-yr fixed residential loan right now.

I really like this idea of having a place to use when I want and 4.89% isn't a bad return for zero work. 

As an agent, I would only think its a waste if I have a client who wants to submit a lot of lowball offers and the response from the offers is bad for my reputation or hurts my client's chances of getting an accepted offer. 

If neither of you have experience with remodeling/fixing houses, then I would say its bad advice.

Also, would doing a house hack with a friend be a good or bad idea?