Shroud extender, or what?

I read somewhere about shroud extenders being a common modification. Is this a shroud extender I have on my boat or what is this? I can't find it in the parts diagram so it appears be be custom (just like everything else on this boat).

https://photos.app.goo.gl/bKk8LHg2iw24wPUk9

And what is this used for?

I guess the small wire is just a safety not to loose the quick release pin.

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Hobie Cat 21SE #376

Yes, That is the extender used for righting the boat after a capsize.

https://media.hobie.com/digital_assets/21SC_Manual.pdf#page=16

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Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)

How much help are shroud extenders when righting the boat?

It turns out the the quick pins will not lock in position. They can be pulled out without pushing the button if there is slack in the wire. I have to replace them or tape them in place.

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Hobie Cat 21SE #376

Your missing.....
The Johnson Hyfield Type Lever has a number of very practical features that
have been developed after extensive testing on both high performance multihulls and monohulls.
The fitting is rugged, having an ultimate strength of 2500 lbs. A positive stop
is provided to prevent jamming fingers between fitting and wire when thrown
open under load and the large surface area of the push pad makes it easier to
close lever under load. Lever take-up is 2 1/8” to an over-center position and
comes with a quick release pin for positive locking. The extender arm may be
had in either 1/4” or 5/16” pin size.
This is an essential piece of hardware on Catamaran shrouds to allow the crew to
right the boat after a capsize, without it, another boat or extraordinary effort is
required.
Trailerable boats up to 26 feet find that a lever on the forestay greatly facilitates
stepping and unstepping the mast.

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Bill 404 21SE

That lever looks great. Thanks.

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Hobie Cat 21SE #376