Marth's zones are pretty consistent. There's no reason he should keep Yoshi WITHIN his SAFEST and most EFFECTIVE tipper zone under any circumstances.. this applies to pretty much everyone unless you're camping. And if you're camping you only want them to come as far as his tipper range and not let them in any further.Personally, I think we should make this thread against multiple characters, so we can have foavorable and unfavorable zones for each character.
Like against a Jigglypuff, far is favorable and so is mid. Close is harsh though because of her grabs.
Against a Yoshi however, mid and close are pretty favorable and far is bad.