The Pro-Line 29 Grand Sport 2008 vs Pro-Line 29 Sport 2006 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
On paper these two are close siblings in the size department — Pro-Line 29 Grand Sport 2008 at 29,0 ft versus Pro-Line 29 Sport 2006 at 29,0 ft. Weight tells a clearer story for trailering families: the Pro-Line 29 Grand Sport 2008 tips the scales at 631 lbs — 579 lbs more than the Pro-Line 29 Sport 2006 at 52 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The power gap is worth calling out. Rated to 600 hp, the Pro-Line 29 Grand Sport 2008 has a 100-hp advantage over the Pro-Line 29 Sport 2006's 500-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Pro-Line 29 Grand Sport 2008 carries 24 gallons versus 2 gallons in the Pro-Line 29 Sport 2006. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 8 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 Pro-Line 29 Grand Sport 2008 and its 600-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Pro-Line 29 Sport 2006 with its 500-hp rating is the more economical daily driver.