Zandvoort would be exactly similar to Katwijk. Although I think our club is much prettier and we are better located with respect to the town. But the beach and sandbars and surf are pretty identical.
If we hold the event in mid-summer then I don't think the surf will be much of an issue. But Hans is way longer a member at this club then I am and I respect his judgement unconditionally.
Can we get off the beach with an onshore F4-5 (say).
It is never the wind but the seastate that determines this. Mostly I can get off the beach just fine in these winds. Also the predominant winds are south-west and thus parallel to the shore line.
I'm sure things are considered and I leave it too Hans and his GC. I really can't interfere here. But even if we do switch venues, holland is so small that it won't much difference in your travel plans anyway. Ijsselmeer is only 30 km away for example.
Wouter