I've been using a 2000 Formula F155 for about 5 years and love it. I'm 175 lbs and recreationally sail lakes in MN. I mainly use the F155 with my 8.0 retro and occaisonally my 9.5. With the 8.0 I often sail on 10-20 mph days and if pinched for time often ride with winds going into mid 20s. I love the board because I can sail way up wind and explore the entire lakes.
It's got a few dings so I'm considering upgrading to a used 2003 formula 147 wood. I know the F147 are wider (100 vs 85) and shorter (232 vs 270).
Will it work as good in 8.0 conditions or will it feel too big (ie wide), especially when the wind picks up to upper teens?
What fin will be optimal for the 147 and 8.0? 58 cm or 70 cm?
Will it go upwind as well or better F155?
Will it be even harder to go downwind?
Does it have similar reaching speeds?
Thanks for your insights.