I type all my letters and just interchange players names unless its a player I really want back, I might add a little something extra. Just saves me time and I'm able to get more sent out this way. Everyone has their own way, its just up to the sender imo.
Cam Newton PC: http://goo.gl/VClC91
Carolina Panthers Prizm PC: http://goo.gl/xqmVCs
Miami Heat Prizm PC: http://goo.gl/C57MQz
UVA Prizm PC: http://goo.gl/UHACyT