barefoot is best as it is safest, your bare feet grip better than with any shoes! however! if you are vehemently opposed to giving up your shoes - please follow these guidelines set by the crew of our vessel: Please choose comfortable, soft-soled non-marking shoes with plenty of grip. Avoid wearing high heels or shoes with hard soles. This type of footwear offers little traction and can be potentially dangerous should you happen to lose your footing.