[o2bnme]

Ah, racing ... so, if you want to be as competitive as possible, you'll want more boards to pick the correct one. If you just want to get out there and race (and be as competitive as possible), you'll be able to get away with fewer boards. I'd say two boards...

The 3 boards I'd choose:
Light wind => iS145 (or iS155 if you want to plane as early as possible without going for a formula board)
Medium wind => iS111
High wind => iS87

The 2 boards I'd choose:
Light wind => iS145 (or iS155 if you want to plane as early as possible)
High wind => iS101

You'll find that the more you sail the iS101, the higher the wind can be. I'm to a point where I'm becoming very competitive with my iS105 and a 34cm fin and 5.6m2 Hucker. I purchased a 30cm fin to see if I can get more control in chop with my 4.8m2 Hucker. And I've proven I'm very competitive with an 8.0m2 Retro on the same board. The key is being fully powered up. I can't emphasize that enough.