Not clear on what you are stating. If the ball is in the circle, a player can still round 1st base. However, if the ball is in the circle, they can't hang out off the base. If they round, they need to pick up the ball quickly and if the ball is in the circle, they are required to advance or retreat. The umpire should give enough time for the runner to pick up the ball and not rush a lookback call in this case. If the ball is not in the circle the runner can do whatever they want but are subject to being tagged out if off the base.I'll bring it up during the meeting at the plate prior to the game. If the ball is in the circle the runner is out if rounding first trying to entice a throw (stay on 1st or advance to 2nd). If the ball is live (not in the circle) rounding is fine. Can advance at runners risk. Never had a coach or ump disagree. To many missed calls at 1st.