If you haven't figured it out already, you just need to 'use lib' your locally installed path at the top of your perl programs -
use lib qw(your/path/here);
So for you, you'd want:
use lib qw(/home/USERNAME/site/perl/local/share/PERL_VERSION);
(For most things ... some things install in local/lib, etc - you just need to include the path to where ever the module is installed).