Don't just get a glider rating - fly them! All the time counts toward total time....If you buy your own or are in a club(e.g.: not renting by the hour), the longer you stay up, the cheaper your hourly rate comes out to be.
$60 tow - 1 hour =>>>>>>>>>>> $60 per hour
$60 tow - 2 hours =>>>>>>>>>> $30 per hour
$60 tow - 4 hours =>>>>>>>>>> $15 per hour
Now you're saving money!
of my 1507 hours at ATP, ~150 were in gliders.