Whilst the ribeye leans over and won't be as comfortable it will only go as far as the tube touching the water - then it becomes "stable".
After you have already split your head open on the anchor whilst bending down to pick up a rope!
IMHO tubes should at least rest on the water towards the back of the boat, unless you're racing. Then they provide stability when alighting,
rest more fully if the boat is heavily laden providing the increased need for stability
, and lift off when moving on the plane.
Only downside is weed if left on a mooring. Which ours is.