Alice -- Neville's reasons for avoiding the experience of facing a boggart in front of his classmates are sound, but he really ought to learn how to do the charm that defeats them.

Perhaps someone could capture one and bring it out to where you'll be camping, next summer? You could teach him yourselves, it's not complicated. Merely unnerving in the extreme, if you encounter one unexpectedly.

For that matter, it's sometimes possible to develop a particular fear, if you'd like your boggart to take a different form. It's something the opposite of the steps one takes to get over a particular fear.