Hi Roy!
If you do things right, regardless of the size of the person it should be like a "hot knife through butter" as the saying goes! If the larger person gets the jump on you and is moving in, zone to the side and then apply constant forward pressure. You should catch them off balance and be able to once again regain the upper hand!

Keep Blasting!
Sifu Lamar M. Davis II
Senior Instructor
Hardcore Jeet Kune Do
Sifu@HardcoreJKD.com
JKD@windstream.net
http://www.HardcoreJKD.com
Phone (205) 296-7070 (Incoming Only)
"Hit Hard, Hit Fast, Hit First - ALWAYS!"
"What is Jeet Kune Do (JKD)? Chinese martial art, definitely! It is a kind of Chinese martial art that does away with the distinction of branches, an art that rejects formality, an art that is liberated from tradition." __Bruce Lee