If your feet are tied up tightly, can you float with just hands? or will you sink and drown?
I believe you can still float since your hands are free to help you maneuver your way around and avoid sinking. The hands are your only escape route in this case and with them you can help yourself keep afloat.
You don't even need hands. In military training they tie your hands and feet throw you in they water
you can float with out you feet. your body consumes air and it can make you float to the surface. women float better than men because of their breast (only if their natural).