How to Use a friend's ROTH IRA

[Youdo Thirakul]

I just finishing listening to today podcast about getting private money using their ROTH IRA. Can anyone give me a little more info of how to do this? From what the podcast was saying there's a lot of upside, like tax free and compound interest. Is there any cons? I want to do a fix and flip on SFH and looking for ways to get private money, lending from someone ROTH IRA sound like it would benefit both me and the person. Would they take it out like a home loan, give it to me to put it on a promissory note, and once the house if flip, i would just sell it back to them? And can we do more then one ROTH IRA on one house? Sorry for all the questions, i just want to get as much info as i can since all this is new to me.