part 2:
A tall fighter is going to try to keep you at a range where he can hit you, but you can not hit him. For this reason, it is so much easier to learn how to fight tall and be an outfighter. The outfighter style works against people your height as well. if you are short, and have a **** gym and **** trainer that can't teach you to be an infighter, good luck. Most trainers do not even know how to train a short fighter, and that problem is even worse considering there are few gyms around today with credible trainers anyway.
Here is what is going to happen to a short fighter trying to fight heavyweight. You will be ignored. You will go to gym countless times, and you will hit the bags and you will jump rope, speed bag, shadow boxing, and maybe, maybe padwork. EVERYTHING but spar and fight. That's reserved for the tall fighters. you'll have been going for a year with no action and a tall guy comes in and has a fight after 2 months joining. You are looked at as a lost cause. I've seen it and experienced it. and when one gyms rejects you like that, good luck finding another one. Not too many gyms around if you haven't noticed.
at any rate, if you are in this position, beg, plead, bribe if you have to get some sparring. and once in there, don't even think about outfighting/traditional boxing. I found an interesting article for strategy against short fighters that reveals a weakness. http://www.expertboxing.com/boxing-styles/how-to-beat-a-shorter-boxer
You have to fight mid range. You have to get inside obviously, and everyone knows by now how to do that, head movement, jab even if it doesn't land, fast feet. Don't lunge, don't reach with your punches, get in and fight. Now, you've gotten past the jab and you are ready to let your punches go. But if things weren't already tricky enough, they get trickier inside. you'll be clinched by a tall fighter that knows what he's doing. The ref might, might even warn him a couple of times, chances are, he won't get a point deducted and will continue holding when you get in close.
So you are clinched, now i have a theory that you can punch while in the clinch. I've watched many fights where one fighter got clinched and had opportunity to punch the body, but failed to do so. Tyson is notorious for that. Some clinches you'll be completely locked up and unable to punch, but the opportunity will come, so land HARD punches. Problem with this strategy is the ref might step in as soon as a clinch happens and even might warn you for punching in the clinch. Another issue is the judges might not count punches in the clinch, even if they are effective.
When you can, avoid the clinch. KNOW that some tall fighters are going to try their hardest to either clinch you or push you away out of mid-range. As well, they will move around trying to avoid you. if you land enough body punches, you'll slow that tactic down. Again, don't do what Tyson did. he initiated clinches sometimes for rest. you can't rest if you're short. That's all i have, i'm still trying to figure out this puzzle that seemingly no one has answer.