When two boats share the same hull type — in this case both the South Bay 422F A 2013 and the South Bay 520CR B 2013 are pontoon designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department — South Bay 422F A 2013 at 22,0 ft versus South Bay 520CR B 2013 at 22,0 ft. At 195 lbs and 245 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 150 hp, the South Bay 520CR B 2013 has a 35-hp advantage over the South Bay 422F A 2013's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
Both boats are rated for 1 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: Performance buyers should lean toward the South Bay 520CR B 2013 and its 150-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the South Bay 422F A 2013 with its 115-hp rating is the more economical daily driver.