Good job on getting nicely polarized, rich, saturated sky coloration! yeah...a lot of the bayonet-on petal style lens hoods are a regal PITA if the polarizer is inside the hood! ACK!
But I used my own guesses this time. Reading Bryan Peterson's Understanding Exposure as we speak.......... I think I could have used the info on those shots!
ETA: I didn't really understand DOF in relation to aperture, now it's making more sense. Lots of good stuff in this book!