Well you can automate the compilation of perl modules also you can put them in a separate location not to interfere with local modules.

perl Makefile.PL LIBS=$HOME/.perl PREFIX=$HOME/.perl && make && make install

To use the libraries you only set the PERL5LIB like:

PERL5LIB=$HOME/.perl

or Include the following in the header of your script:

BEGIN { push @INC, "$ENV{'HOME'}/.perl"; }