Poor group staff, the check in process is slow. You need to do the self checkin in the computer next to the desk and then queue for more 20mins to "check-in" again at the desk. So, what's the point of the "self checkin"? I used the self checkin service of AirAsia and Lufthansa before, I didn't need to visit the desk again, simply dropped the baggage then go.
Only 20kg is allowed for sport equipment baggage no matter how many luggage weight you still have. Never have problem with sport equipment baggage with other major airlines and Jetstar.