Peek-a-boo is good for men with fast reactions because it keeps them in attacking position.
I think the philly shell is better if used correctly but I would recommend people to use the peak a boo strategy for mma and boxing because it's easier to master.
"if you see a 6 3 Viking looking guy, run" hahaha, is this you?
http://i33.photobucket.com/albums/d55/bo...
Which ever stance you feel more comfortable in.
c'mon man