With the modern rig on the T it meant that there was a 'modern' assymetric boat for the 'fat boys' to sail, so that those people to large for the F18 could sail the T and be competitive. The Hurricane has now followed suite and has modernised its rig to include an assymetric, as the Hurricane SX and has also seen a resurgance in its popularity. The F20 never really caught on here in the UK although there are a few around.
