Agree with Scarecrow.

Your foot strap should be as far back as possible and used for your back foot. However some crews add a second foot strap just behind the rear beam. This is never for the front foot, it's used in lighter conditions when the crew isn't needed right at the back of the boat.

Personally I have experimented a fair bit and there is alot to be said for hooking up a good safety line (Jesus line, chicken line whatever you want to call it).