With friends or colleagues, spread out the crew on several identical boats and sail all together.
1st step: Groix,
2nd step: depends on your desires!
lloria Bretagne offers you several First 31.7 (5 units for the 2020 season) and several First 36.7 (3 units for the 2020 season).
It is also possible to select several different boats sailing in a similar way (close speeds, "échouablse"or not, ...).