Antistatic mat instead of antistatic wrist strap?
Any method you find that works to ground your body (for a wide definition of the word 'works') is OK.

'Works' means it's safe, and you don't forget to use it. 

I'd be a bit cautious about doing electronics in bare feet, I drop all sorts of stuff on the floor. That's why the ankle strap that goes under the heel of your shoe as well could be a good idea.