Hoods are tricky things. The rear angle and the 'bump' (or not) in the middle are things where views vary. I think I have the same bow set up that you have (except mine are 100mm longer on the sides). Play around, as Geof did, with an old sheet to see what you get with the bows up. You have probably done all this anyway. Will send you some pics of the rear stitching tomorrow.
Greg - this shows the liftadots and the tear drops.
Rain channel
