I think that the Site::Point class will benefit from...

Agreed.

The sql method now returns just the POINT code instead of the complete ST_GeomFromText string. This allows me to do something like this:

my $point = Site::Point->new('SO 1230 4560');
$dbh->do("INSERT INTO Test SET start = ST_GeomFromText( ? , 4326)", un
+def, $point->sql);
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As 4326 is a constant (as long as I am only dealing with this planet!) it doesn't need a placeholder.