Can't remember the last time I needed a 4.0. A flat 4.8 is as small as I've gone in many years. Amd it probably took wind that was close to a steady 30 to justify it. If I'm running a 6.4, the majority of the locals are on low to mid 5.0's.
Well... Perhaps a 4.0/7'11' has the same relation to you as a 6.4/9' has to me. 100L definitely does not float me, despite my reduced Liter Boy status. When things get to be 4.8 where I sail, it gets pretty dang hairy.
Plus my 100L rides a whole lot better than my old 88L board.
Gear doesn't feel big to me till 8.3 and up. And my 8.3 doesn't even feel big because it swings so nicely (a few year old Aerotech Ultimate III). My 325 Xantos is not what I'd call a jumper. But it runs just fine if the chop isn't too stiff.
Most definitely. At 100L, I become the inertia, not the board.
But mostly this is how I think of it.... If I get a week of 6.4/100L winds, I'll sail most of it. If I get a week of 4.8/Tiga winds, I'll get maybe two days.... With at least two days of rest between those days. And when winds get to my 4.0 level, most local folks don't have sails small enough to get on the water.
Gimme one big day a month and I'm content. And there's plenty of adrenalin in my 6.4 or 5.3 days.