ASA call

[oppool]

Here's one that did happen to me last year in a SPA tourny playing under ASA rules.

B1 hits a hard grounder to F3 who bobbles the ball but picks up in time to make the play at 1st but the trouble happens because F3 steps across the double base with at least 95% of his foot making contact with the orange side only his back heel catchs the white side of the bag which the runner hold up to avoid making contact with F3. I call the runner out explain to the coach that part of his heel did catch the bag on the white side he tries to argue obstruction that is why they play the two sided bag at 1st after some discussion I say sorry coach B1 is out let's play ball. No where in the rule book do I see where it says if any % or all of the fielder or BR foot must touch there side of the double base bag. I agree with many I see that say the double base bag is not worth the trouble. Gave me your thought guys...

THANKS
DON