Ski or Snowboard Equipment
If you are hitting the slopes, you can bring your ski and snowboard equipment as checked baggage. One ski/pole bag or one snowboard bag, and one boot bag is accepted per person. The combined weight of the ski/snowboard bag and the boot bag may not exceed 50 lbs. or excess weight charges will apply. Linear dimensions may exceed 80 inches (203 cm), no excess size charges apply.
http://www.delta.com/traveling_checkin/baggage/checked/index.jsp
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If you do not have a hard sided case you may have to sign a waiver of damages. You might want to inquire about applying for a Delta AMEX card; usually $95/yr but our first year was free. The credit card will waive the $25 fee for the first bag. We also rec'd a 24 hour pass to any Delta club when we got our card; used it the other day in Atlanta as we had a three hour layover . . . free drinks and snack bar.
You might want to FedEx some of your other gear; helmets, boots etc? We use plastic totes from Home Depot with 2 piece hinged tops and secure with zip-strips. That is, if time permits?