have a look at the other holes nearby, if any of them have cracks coming from them, it's only going to go again. Most booms have the extension holes down to let water run out, unfortunately this puts the holes under tension when sailing, if you drill a small hole at the back of the boom on the other side, (to let any water out), you can turn the extension over, so that the holes are up and in compression when sailing. This makes them last a lot longer! You may find your closest windsurfing shop has a box of old junk, including bits of old booms, that's the way I'd go.

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Originally posted by decrepit

have a look at the other holes nearby, if any of them have cracks coming from them, it's only going to go again. Most booms have the extension holes down to let water run out, unfortunately this puts the holes under tension when sailing, if you drill a small hole at the back of the boom on the other side, (to let any water out), you can turn the extension over, so that the holes are up and in compression when sailing. This makes them last a lot longer! You may find your closest windsurfing shop has a box of old junk, including bits of old booms, that's the way I'd go.

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Ahhh.

I like it Decrepit, good point about them being in tension and compression. Never thought about that before.
Always pays to have boom arms as short as possible. But this means having a couple of booms.

Where abouts do you live Drowny?

I got a spare boom you can borrow to get you out of trouble, if you need.

I live in Singleton near Mandurah.

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Originally posted by drowned rat

I never actually thought there was that much pressure on a boom, but

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Try a flat mast high landing hooked in, or a mega catapult at speed.
I've bent the boom arm and ripped my harness apart in one of those, and I'm under 70kg

LOL Thanks NotWal, so I don't really need a new boom Maybe I should just toughen up and get rid of the boom altogether and just hold the mast in one hand and the clew in the other.