Never understood this since you started bring this up. Does 2-4 MPH really matter? The only time I see a drop in performance is when my fishing buddy decides to bring am overseas shipping trunk for a tackle bag. Can't hardly use everything in it in 3 days much less a day trip.
Two daughters and a wife here. Sister in-law goes with us occasionally. Outlet mall is the least of my worries, that would imply cheaper prices. High end stores scare me.