Ledfoot, Tampa/St. Pete.
www.Owens and Sons.com, or
www.Aluminum Slide-On.com. (Same site). Call Jeff. Custom built, cheaper than mass produced, built and ready in a few days. Does not need any info. about your boat, has all dimensions from many members here. Anything you want. AND CHEAPER THAN MASS PRODUCED. His sister Kim will answer the phone. Leaves early to fish on Fridays. Great family. Part I has a single for his 18sf, and I have one for each of my 15 Whalers. Good people. E-mail me for anything else. Part II.
BTW, my 20 MA is on a tandem (not an Owens), with no brakes, which is great. Also, highly recommend torsion axles over any other options. Give him a call. You won't regret it. Mike.