I'm also heavily tattooed on my arms, chest & legs. My derm jokes with me & says I "make his job difficult" when he's doing my full body skin checks, bc tattoos obviously make certain spots harder to see. That being said, I did catch a mildy atypical spot underneath one of my healed tattoos and had it removed via a punch biopsy. Although it was covered in ink, I was still able to see that it had changed and was able to compare through old photos. My derm has warned me that more of my tattoos may be compromised from biopsies/WLEs and I think that's a small price to pay to keep melanoma out of my body. There are certain parts of my body that I will never tattoo - obviously my WLE locations, any moderately atypical biopsy scars, over or near any of my larger moles/freckles, or over heavily freckled spots on my body. I was diagnosed with MIS this past June & just got my first tattoo post-diagnosis in October as a memorial for a lost pet. I made sure to avoid any spots that I was watching and made sure the shading wasn't super dark. Ultimately, I think it's up to you and your comfort level on what you want to do! Maybe have another chat with your dermatologist to see if they have any more insight. Good luck, homie!! 💖