Gestalt said..
Matthew what's it like at low tide and is there much current on outgoing tides.
Both low and high tide are sailable for dings, sails and kites. Sailing in the river-mouth (as per video) and within the river estuary are awesome for all the sports.
Wavesailing the main beach is possible, but requires a solid 25+kn because the headland kills about 50% of the sail pressure; the waves are very hollow so it isn't for the faint hearted. Kiting is the waves is common. I haven't seen people dinging the waves as it appears to be a bit too hollow, dingers just do swell-riding.
If sailing or swimming, dont be in the water too close to the point (car park) as the wind is non-existent and there are hidden rocks which are only visible at very low tide. You will likely so some damage to yourself or your gear.
Low-tide in the river-mouth is too shallow in some parts, and sand is exposed in others - it is still fin'able. High-tide in the mouth is dingable, though there are some sections which are a bit shallow.
Low-tide is speed-flat on the edge of the sandbar. The sandbar is a bit short at about 400m, I have only had 18-20kn wind with a 29kn peak (I think a perfect day could deliver 37+kn). Ding'able in most areas, except where there is obviously sand. High-tide you can sail everywhere; ding'able almost everywhere.
My one main suggestion if sailing there - take water and food to the waters-edge... it is about 800m trudge each way. I use a trolley and walk on the hard-sand.
... oh, and the water is a perfect 26deg
