Hi,
Its not the length of the hand wraps that gives the strength, its the way that you put them on. There is a particular way of wrapping every individual hand to give support where it is needed, movement where it is needed, warmth to the soft tissues where it is needed.
Wrapping is also required to be generally different depending on the gloves you are using.
My advice would be first to learn exactly how hands should be wrapped...you'll be saving your hands pain and suffering.
Out of interest, I don't wrap my hands in training. I've trained for proper fist position, supporting the bone structure and soft tissue all the way to the floor as a prop, and utilise heavier gloves for protection.
Hope this gives a different perspective...
Best regards,
Smiler
http://garysmilerturner.blogspot.com/