I prefer the look of the top mounted wipers myself. Best way to improve them while keeping them top-mounted is to use heavy duty marine wiper motors. They are not cheap, but they work great as a replacment for the old vac wipers.

Here's a link to the style most people use:

http://www.boatersworld.com/webapp/w...38&cat2=343437

You can do a web search on AFI WIPER and see a lot of links for them.

Stan