Gorgo said..
You really need to master both methods. The pro/strap-to-strap method is very nice, but it's not very tolerant of poor conditions or mistakes.
The less-pro/multistep/shuffle method can be done at any time, in any conditions, at any speed. It is very resilient and very reliable. It's what you're doing if your feet don't quite make it doing the pro method.
More importantly it frees you from having your feet in only that special spot. You can walk around the deck at will and that helps every aspect of your foiling.
I wear booties all the time. I love the freedom and simplicity and feel of bare feet. I hate the foot injuries and wear and tear of bare feet. I have a permanent injury to a toe joint simply because I stubbed my toe on a rock hurrying to get to the water.
In ideal conditions I go barefoot. If the sand is burning hot I wear 1.5mm reef shoes. If it's chilly or there's reefs in the area I wear 3-4mm boots, usually on my strapped boards. In the cold weather I've been wearing 5mm boots strapless on the wingding.
The grip with boots is better than bare feet. I surfed a short custom SUP for several years with boots and no deck pad, wax of sugar coat. The board wasn't polished.
First day of this season i went without booties i kicked the foil in a fall downwinding...small but deep cut on the top of the foot.
I foiled back in with what looked like gallons of blood&water sloshing around the white deck ,mostly visual effect but it does look very impressive.
Three stitches and a more than two weeks healing ,as i have gone into the water pretty much everyday in typical surfer dimwit fashion.