I just been chatting to my mate about a stage 3 ski we saw on a novice race weekend,this guy had a rear + a shorty RaD filters at first i thought great idea!
then thought ive never heard of this done before on this site also wouldnt the air from the rear just get in quicker and be cooler so the shorty would be pretty much redundant
as anyone tryed this,i was working on a kinda of air scoop/vent on the side of the ski like a flo filter to help my shorty