Don't let your friends dad lose his buisness and resort to selling this name. Instead use it to save his business. Perhaps you can even make a profit by helping him with the web design. (though I would reccomend you outsource if you feel its above your capabilities. Its going to be a big job.)
Looking over his site, I'd say the site is very representative of what an average cookie cutter business site looked like five or more years ago. It still has trappings of SEO that is now black hat and was popular back then. (obvious hidden text) There is very little effort to turn the visitors into buyers. It looks more like a brochure annoucing the existance of a product rather than a user involved site.
First off a complete site redesign is in order. Lose the focus on SABCO and put it on KEGS.com. One is far more brandable. I'd make the site kegs.com independant, featuring all kinds of brewery articles, forums, diy how to's, videos, ect. Then treat sabco as an exclusive business partner of kegs.com (IE promote their products throuought the site as if they were a separate entitiy.)
He could cover the additional cost of the web design work by earning additional income from featuring affilate links for similar but non-competitive products. If he sells barrels and equiptment, partner with a specialty yeast supplier, and someone who sells grain.
I'm sure most of us here realize this, and your friend's dad probably doesn't. The people he wants to find his website are not searching for brewery equiptment. Thats why he isn't getting any sales. It would seem they should be looking for brewery equiptment, but more than likely they are searching for things like "how to make my own beer at home." By turning kegs.com into a separate entity that focuses on the kind of people he really wants to sell to. Contests, Tshirts, mugs, events, can all be features of the kegs.com brand. By making the site a separate entity he can inspire people to be interested in his type of products and then be there to direct them to SABCO when they're ready to buy. Even if the people arent all interested in brewing, he can turn a profit from the extra traffic and use it to support both the site and his business.
SABCO in its own right needs a bit of work. Mostly just a site redesign that changes the focus from informational to Straight Sales. Kind of like good cop bad cop. One site provides motivation to act the other provides a means for the action to follow. They are a married pair, but to the vistor they seem independant. People can build a feeling of trust from kegs.com because they don't sell anything directly and trust their oppinon that producst from SABCO are of good quality and fair price. People would not normally build that same level of trust dealing with SABCO directly because buyers are inherently distrustful of sellers.