The new carbon Chinook has a nice shape and is really light!
I sail with Tecnolimits contact booms with the flexyhead.
If you sail clean conditions there is no need to get that construction, but if you sail in messy choppy waves its a bless.
In the beginning I was a bit afraid that the connection to the mast would be less direct/stiff, but it clamps like any other good boom, it just ads some comfort.
My former booms are the Tecnolimits XTR, after 6 years of hard use I replaced once the back-end after 4 years (=+/-500sessions).
the backend was still going strong but had chips and jaws out of it because i,m to lazy to clean my stuff and there is sand everywhere here and it didnt feel right to keep sailing with that.
When I sold it to a friend it was still as stiff as a the brand new one he bought too.
I got some pics of the Contact compared to the XTR, both have a small diameter
the curve: left contact, right XTR
XTR boomhead:
Contact boomhead, lots of leverage:
you can tune how flexy you want the head of the Contact: I prever medium.
When you make it really tight it feels like just any other normall boom.
The contact needs a bit thicker AND longer shim.
I also tried the North HD-boom with the I-front but being used the Contact it felt rather stiff and didnt had much of flex.
For me sailing in confused and choppy waters all the time its the best invention for booms since they found those newer curves 8?years ago.
I doubt if I can ever go back to a normall boom.
The only downtrade: they are expensive and you really need to check before every session the rope of the head as there is a lot of force on it! (I replaced mine with a thicker as average version of Formuline