Retail sales of towable RVs climbed 6% in November from a year ago and 9.3% for the first 11 months, according to the latest report from Statistical Surveys Inc. a Sales for the high-volume travel trailer sector grew 8.1% for the month and 11.3% year-to-date. Forest River Inc. was the towable sales leader through November with a 36.5% market share, edging out Thor Industries Inc. which captured a 36.2% share.