Here's my plan. Anytime a fair ball is hit I'm going to lie down over my base, making it impossible to touch it. The runners will either have to stop before the base knowing they will be called out for not touching and thus then be tagged out, or they can go past the base and be called out on appeal for failure to touch. In either case I can beat the obstruction rule because the runner still has to touch - but can't.
Or am I getting this wrong? I guess it depends on who I ask.
