Create empty subdirectories for your users in the gopher root,
typically /var/gopher as the super-user. I use /var/gopher/usr
to imitate <gopher://bitreich.org>.

For all shell users on your server, create public_gopher
directories for each and every one of them.

Now use mount_nullfs /home/[user]/public_gopher /var/gopher/usr/[user],
then try querying them from your gopher client.

Note that most of that will be lost at reboot so you have to repeat
the mount steps, unless you use /etc/fstab.