Re: Float tubers....ASSEMBLEEEEEE!
I dont see why you wouldnt be able to reach the line to cut it. Tubes arent very big and you could always dip in while holding the tube for flotation.
But its an irrational tube fear, I have many myself. Like getting my leg chomped on by a 100lb snapping turtle of having the one landlocked shark in all of MA finally show himself to the public as he devours me.