Yikes! You're second in your league??? How??? That's an example of how to do everything wrong .... and people wonder why they have so many injuries.
Add to what Simon said, hard tackling also drains condition and increases chance of being carded, and probably increases chance of injuries. Use normal tackling unless you a) have already been carded and/or b)are behind and desperate.
~^~*~^~ My opinions are best when taken with a grain of salt. No iodine added. ~^~*~^~