You guessed it. It's a sales pitch. Much like calling their F18 an F18 model. It's very confusing to the newcomer.
The F17 is a concept created by Performance to make a Formula class of Performance only I17's. It consists of two configurations.
1- The standard I17 configuration for crew weight under 205lbs I think.
2- The standard I17 with a larger spinnaker for crew weight above 205lbs.
I'm not sure if 205 is the number but it is close.
This new sail plan will be in effect next year for Performance Race Week.
It is a confusing situation. They should have just called it an amendment to the I17 rules.
Mike Hill
Tiger #1520