My favorite ski bag is the Dakine Fall Line Roller double ski bag with wheels. The Dakine Fall Line ski bag fits two pairs of skis, ski boots and has enough room to pad skis with clothes. Could also fit a helmet in as well. The bag weighs less than 7 lbs ,so you should be able to pack all your ski gear in the bag and stay under 50lbs. I wouldn't recommend a hard case (even though they may protect your skis, hard cases weigh more and will hold less gear.
I personally would not put ski boots in the the ski bag (as it would weigh too much) or necessary ski clothes you will need to ski in the next day (in case the bag is lost).
Dakine Fall Line ski bag Details:
- Holds 2pr skis
- Holds 1pr boots
- Holds poles and outerwear,
- 360 degree padded ski protection,
- End handle pairs with rolling luggage for one-handed operation
- Removable boot bag
- 10 YKK lockable main zipper, durable, over-sized 9cm urethane wheels, exterior zippered pocket
- Packs down tight for easy storage.