well the P18 was heavier than the hobie 16 and the hobie 18 was heavier than the nacra 5.2 and the nacra 5.8 was heavier than the p18-2 and the G-cat5.8 heavier than the p-19 and the hobie 20 was heavier than the mystere 5.5 and the hobie 21 is heavier than the nacra 6.0 and I know people in there 60's still jacking that stick. sorry Rick but this could be the reason sailor's are scatterd more today than of the 80's 70's . Less Information more sailing think about it......