I'm pretty sure ESPN has fractional scoring set as default, but do you know this for sure PP?
Fractional scoring is definitely the way to go.
For those unfamiliar, a player would get .1 points per yard, as opposed to only 1 point per 10 yards. That way, you won't get screwed if a guy rushes for 109 yards. I had a game last year where I won by .1 points. A game of inches.
link to your IDP league scoring
fractional scoring is not set as default and I do not have it set up in this league. If you choose to do that in your IDP league you need to go into the commish mode and go into "edit scoring" and the first drop down menu lets you choose custom, fractional or standard.
I usually choose custom because that player who got 109 vs. 110 is part of the "agony of defeat" that makes this game fun. But as you are commish I'm ok if you want to change in your league. Keep in mind that some owners signed up under the rules already posted so they could have their own opinion(s) so any changes you make now that it is (almost) filled up should be announced on the league home page so that all owners are made aware. If enough owners on the cash league speak up that they want fractional scoring I can roll with it but not something I usually set up.
In the IDP league you will have fractions factor into scoring due to the 0.5 points awarded for an "assisted tackle". Those tend to rule out any tie games, but not impossible.
Also, I kind of like that some fantasy games can end in a tie. shakes up the standings for everybody. JMHO.