What has worked for me....
Purchase adhesive backed weather stripping shaped, in the cross section, like a hollow letter D. Adhesive is on the flat side. Lowes and HD has it and it comes double wide attached length ways so you can strip them apart. It is about 3/8 to 1/2" tall.
I slice it lengthwise along where the curved side meets the flat side of the D.
Attach it to the inside of the skirt so that the slit side is facing down, where the air is coming in.
I attach it at the point where it will touch the fuselage but not push out the skirt, so this is typically about an inch above the edge of the skirt. On the 8, as you near the curve to the horizontal straight edge by the back seat you need to widen it up from the edge.
The theory is that the incoming rush of air will spread out the weather stripping, where it has been split, and seal against the fuselage in flight.
I have used this on several planes and it has really worked well. Additionally, you cant see it when the canopy is closed and is net very visible even when open.
I also put a 1/2" wide line of felt along the inside edge for abrasion purposes.
Good luck.