I swear by Thule products.
With just some locking cross bars and a ski box, you're in business!
An eleven cubic foot ski box will easily hold four pairs of
skies, poles, boots, and two snow boards. As well as scads
of smaller equipment.
The problem I have found with rack mounted ski/snow board
carriers is that the skies and or boards tend to collect allot of
road debrie (thrown up gravel, dirt, salt...) not that good for
bindings!
Not to mention that the rest of the year the box works really
Well for carrying luggage, camping gear, and all your wife's
shopping bags. (Or your wife if she gets out of hand!!!)
Yakima roof rack systems are also top quality.
Both U.S. made.