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I really really hope ETNZ (assuming a win) don't shop the venue.  That was disastrous for Oracle in 2017 in terms of fans, and even though a huge majority of NZ fans can be obnoxious chest thumpers, it's such a cool team and I don't think any of the B backed or corporate teams will ever be quite...

What a bizarre filing on the strop idea.  The thought of one of these boats just tying something structural on is silly.  What's not silly is if this was somehow related to Ineos' quickfix on the cunningham, but not sure that the ruls mandage that connection apply to controls like the cunningham...

My guess would be that they're happy to sail without, and just wanted the aero effect so had people on shore doing a lot of filing to see if they could get away with it.  Would be awesome if they have a secret weapon using the stays to do.... something else?... but I doubt it.  

Dunno,  before this last series it sure seemed like boats were able to foil in the light with a jib, I was pretty certain that we wouldn't see zeroes, but am far less confident now! Does explain why NZ was spending so much time on it while other teams were trying to push the jib limit down. 

My hill to die on is getting people to acknowledge that LR are getting all the foot shaping done inside the skins.  That slack mainsheet in that little slot is never going to do anything fore/aft. 

Anyone else still think that LRs foot tension gets controlled below deck? That slot says no. 

What would do more damage: the impact damage of AC75 foil vs whale skull, or the optics of an AC75 making cetacean sashimi on international televiewing?

How do these boats react when they hit something big?  Wasn't there some guy that got really hurt at the Dubai Moth worlds a few years ago when he hit some kind of sunfish?

Don't you think they'll have a move in the playbook for the "hold still" tack where people stay put and then quickly tack back?

I don't think so either, seems like they just use a batten with some kind of variable tension.  That I think would be cool to see.  Could be tubular telescoping battens with a ram. 

Just picture most of that below deck, with the mainsheet piston sticking up through a wide slot. How wide depends on how much travel the outhaul cylinder needs Also, I know most boats have one single cylinder for the mainsheet, this system needs two since you're positioning both clews...

Twist and trimming of the mainsheet/leech would be pretty much the same. The only difference would be that you could also push that ram with the double acting "outhaul" cylinder to angle the mainsheet ram aft, tensioning the foot. The controls would be more like a 3d lead, unless you wanted to...

Twist of the mainsail leeches would be done with the vertical mainsheet ram, very much the same as with a "standard" ac75 mainsheet ram(s).  Kind of picture the mainsheet and "outhaul" rams coming together to make an inverted y, with the vertical ram sliding on the end of the more horizontal...

If you wanted to do a true boomless setup that would tension both leech and foot, there's a way to do it with 2 tracks and 4 cylinders. Mainsheet track would be located just below std leech location and have the same radius as foot length. Have a pair of rams facing upwards controlling leech...

I truly doubt NZ are modifying their hulls to match anyone elses (nor would that likely be feasible at this stage) but I admit I am concerned that either someone got hurt, or some critical component of B1 is damaged, and perhaps that it was scheduled to move to B2.   

I agree.  Talk keeps popping up about an "underdeck boom" but either it's imprecise language or (I think) wrong Although now I'm thinking about a radiused track with twin cars with vertical cylinders for leech and push/pull cylinders for canting the mainsheet rams fore and aft for independent...

Unless they have levers attached to the mainsheet ram that can tilt aft so as to tension the foot, but this seems nutty

The below deck boom idea still can only generate force asking the angle of whatever connects it to the clew, making it not very good at foot tension, at least with boat 1 s angle. I don't think there's much below deck besides a track and ram. I think their foot control is done with very stout...

Haha, that's a great image. Problem still needs fixing though. 

An under deck boom wouldn't do much more than a traveler track with the same radius curve My opinion hasn't changed on the LR setup, which is that their traveler/sheet does only angle of attack and leech tension, and they're developing all their foot tension with a batten system