I did the Robe race yesterday with the 6 foot 600 x 600 ones, they were easy to find, from about 1 naughtical mile they look like something swinging on the water and don't look like a boat. They stood upright in 18kt with 28kt gusts and didn't drag with besser blocks holding them. Theres no inbuilt inflation, if they hole they sink. The waves didn't seem to affect them much, probably because theres not much buoy under the water
Heres the quote I got in August from Alflex in NZ


Straight Sides MB-003-00 600 mm 600 mm 1800mm 5kg $350

Straight Sides MB-005-00 300mm 300mm 1700mm 4kg $300

Tapered Sides MB-007-00 300mm 750mm 1800mm 5kg $350


Custom sizes are available on request A variety of colours are available.
Prices do not include freight
12kgs of ballast chain per buoy is sold separately $50 + GST & freight

www.aflextechnology.com email:[email protected] PH 1800147 017