If desired, for the perfect salt rim you can liquidise or grind sea salt to make it finer, then run a cut slice of lime (or orange) around the outside...
If the thumb screws were applied, we would probably concede that this is our favourite of favourite Margaritas. Out of curiosity, we used Clement Creole Shrubb in place of the Triple Sec (which, as we understand it, usually uses a neutral base spirit). We enjoyed the added Rum notes but would probably return to the original recipe more often for its pure and clean simplicity.