10 mn OT, deal with the coinflip the way mentioned above (1st quarter who received receives, if it goes to 2OT the half time team who received receives, etc). 1 OT for reg season and after that ends in a tie, play until someone ends an OT on top in the postseason. I really hate the gimmicks, the ("you win if you score a TD, but not a FG" kind of crap we have now, etc). Just play it out. Yesterday Mahomes and Allen might have thrown for 7 TD ea if you let them go at it.