Sorry Larry, I took this quote as they don't work. "don't do it. It WILL reduce performance to a major degree" In you subject of STAY AWAY.

It is like anything you choose to put on your boat. Resarch it before you spend your money.

Always ask the question, What do i want this to do for me. Do I need this, Is it worth the money. That usually slows me down from throwing my money away.

Joe