Boosting UTP cabling , yes, it's doable.

When i worked with Cisco device, i once asked the SE of Cisco how to solve the puzzle Distance, after he gave out all the solution which i don't feel okey, he finnally suggest me to use this method :
Use the Squenc (i don't remember the exact syntax) command, to sacrify some datarate for futher transportation. Although this is doable in a CAT 3550, but Cisco seem like doesn't want it to be popular.

There are things if you ask Cisco Support in partner position, they will tell ya, but no document are.