Barrier wipes: Coloplast or Cavilon + Skin+Tac? Best Adhesion?

My boy is getting a few raised bumps from the Dexcom patch. I am researching barrier wipes as a possible solution.

Has anyone tried Colopast + Skin-Tac, or Cavilon + Skin-Tac?

I am looking for the best possible adhesion, since the boy is a more or less a daily competitive swimmer: keeping the dexcom on is our challenge. I am concerned that either one might decrease Skin-Tac’s adhesive quality, or, in general, the adhesive qualities of what I put on top.