A hairpin resonator for an FM band receiver would be too big and it would respond to higher resonant frequencies too.
However I think if you place a turning capacitor at the end of the hairpin you can lower the resonant frequency and also get rid of the higher resonant frequencies.
Actually an RFC or any is a transmission line and not only resonates at it self-resonant frequency but also higher harmonics. It is only when you add a tuning capacitor that it acts as a single frequency resonator.
There are some YouTube videos showing that where the engineers seem very surprised.