In reply to ostarke:
Booking sports equipment is usually only required for bulky items (eg skis) that wont in a normal bag, with some airlines it's also a cheaper option than paying per kg for excess baggage.
If you can pack within the limits of a standard checked bag no need to pay extra for the sports grear.
Also as above you can save on weight/space by wearing heavy/bulky clothing, also by taking full advantage of your pockets when traveling through the airport.