There are a lot of different types of those spades, which ones are you referring to? do you have a precise model number (oh and yes your solution will work for me, thanks).
Here are the ones I have seen
type #1- (8 gauge)
http://shop.store.yahoo.com/beachaudio/pbs1-8h.html
Type #2 - (4 gauge)
http://r2.east.rmi.yahoo.com/rmi/http://www.abtelectronics.com/scripts/site/site_product.php3/rmivars%3ftarget=_top?id=11158
Type #3- (quick lock)
http://shop.store.yahoo.com/sweetronicsstore/monster-cable-qlgas-h.html
Here are the ones I have seen
type #1- (8 gauge)
http://shop.store.yahoo.com/beachaudio/pbs1-8h.html
Type #2 - (4 gauge)
http://r2.east.rmi.yahoo.com/rmi/http://www.abtelectronics.com/scripts/site/site_product.php3/rmivars%3ftarget=_top?id=11158
Type #3- (quick lock)
http://shop.store.yahoo.com/sweetronicsstore/monster-cable-qlgas-h.html