Hi, Jason,
Neil Pryde do a similar product, under the name of a "T-Boom Protector", see here:
http://www.neilpryde.com/equipment-2009/accessories/t-boom-protector.html.I've got one and am happy with it, although (IMHO) it could be a bit longer in the mast length protector (it's 27 cm long).
Before I obtained the NP, I was using a normal boom bra then fitting a ProLimit mast protector (its 37 cm long) upside down, just under the boom head.
The NP is used on my 400/370 masts for wave sails and the ProLimit on my 430/460 masts, for large wave and my slalom sails.
Don't know if there is a NP dealer in Adelaide, but you could send an e-mail to SHQ in Melbourne (
[email protected]. Mark it for Paul) or one to Windsurfing Perth, to see if they've got any and what they cost.
Hope this helps,
Regards,
Windman