So I've had hellish wind noise at the front of my CamperKing van since I got it (didn't notice it on test drive). I've just 'installed' the above suggestion (albeit went 4" long) and what a change it was!! The horrible wind noise is gone
My original thoughts that it was the pop top were unfounded and it was the rubber deflector strip. Looking at other vans the deflector strip generally stopped in line with the wind however min extended across the rain channel leaving a hole underneath that the wind was trying its best to get under. I fitted the foam under the deflector and then 4" back under the pop top (my deflector is further forward than other vans I've looked at). I've not glued it yet however the pop is keeping it in place.
Gotta love this forum for solutions!! The wind noise was that bad above 50mph that I was considering getting rid of the van and back to a car!!
Thank you
@Oldrat, You are a Star!!