i think what he means by "boot" is the part of the frond that is still attatched to the stem after the frond has been cut off.
i just wack at em with a straight blade handsaw but that only works if they are loose to begin with. there are some palms with boots attatched very firmly and you almost don't need spikes to climb em, you can just step on the boots, though i wouldn't trust em the whole way up.