Lately I've been looking for restaurants that are listed on Rewards Network AND on MOGL (which I know is mostly local to the southern California area, but they are expanding) together, this gets me 5 UA miles, 10% back, plus credit card spend which for me is currently 5 UR points with the freedom card. I've recently started looking for restaurants that also sell vouchers on Restaurant.com - which can be purchased through the UR mall at 15x. I've found a few that participate in Restaurant.com, MOGL, and RN.

One example of how this would work:

buy $25 Restaurant.com certificate for $10: 150points UR bonus plus 21 point cc spend (if purchased with freedom, grandfathered into the old "exclusives" program)
Spend $50 at restaurant (minus $25 certificate) = $25 spend. (~137 UR points via Freedom rotating restaurant category, plus exclusives 10+10) (125 UA points via RN) (2.50 cash back from MOGL)

Combining these three resources you would spend $32.50 for a $50 meal (After MOGL cash back and the Restraunt.Com cert are factored in) and earn:
308 UR points
125 UA miles

or roughly 13.32 miles / dollar. Plus a steep discount of almost $20.