My board bag was lost for about 18 hours after a crowded, have-to-fight-for-connections, hellish flight into Salt Lake City. I eventually got it back, but an entire day's riding was lost. The airline had a policy of reimbursing for emergency equipment rentals, but I had nothing -- board, bindings, boots, pants, jacket, gloves, even socks were in the board bag. In any case, I couldn't have gone anywhere that day because I had to pester the airline constantly and essentially nag them into locating my bag and then bringing it to the hotel. Simply reporting luggage as missing does not ensure that it will be found, or even that the airline will look for it. You have to bug them over and over and make sure that the staff who are actually on missing luggage duty are fully aware of your problem.