The buoys we have now are 1.4m(4'6in) high and 80cm (2'8in) diameter. the one we are going to make will stand more than 2m out of the water and have a 76cm diameter.

One of the neighboring clubs use them, they said that when they launch them the trick is to put them into the water at a bit of an angle to let more water into them. makes them stand up a lot better. again the guys who have to launch them rave about how much better they are to work with.

with that in mind will give it a go!