Anyone had any experience with yantra tattoing?

Hey there, I'm going to be headed off to Thailand in a week for about the fifth time, and me being Thai myself and recently turned 18 I have decided to get a sak yant tattoo.For those of you who do not know anything about yantra tattooing my understanding of it is that it is basically a form of sacred tattooing performed by certain buddhist monks to imbue the recipient with protection.I was just wondering if anyone here has ever received a sak yant tatto, and if you have... how was it? ha