Any suggestions for a low profile hard tri-fold bed cover?

 

Went with a BAKFlip MX4 Hard Folding cover - dealer installed & so far no complaints yet ! - It took a day for the bed rail seals to settle in to keep the rain out and they used the existing holes to run the drain pipes into. NO extra drilling needed - The cover itself could've had a slight upward bow to the cross braces as just a little water pools on top.