Lindsay Bynes
Lindsay Bynes answered Anonymous' question

No you likely won't.. It is possible...  ETG tests up to 80 hrs. Please let us know if you passed, I'm curious.

Lindsay Bynes
Lindsay Bynes answered Raul Stewart's question

You can float by holding a full breath of air in your lungs. To remain floating "on lungs" exhale fully then quickly inhale. You can do this with your face in the water (survivor float). I'm sure it works while on your back also.

Floating is more difficult for those with more muscle mass.