Curac,
Been to both, WA is heaps better than Maui for windsurfing, except for May to Middle of Sept, When Maui rocks and is warm, whereas WA has cooled down. Then WA kicks arse from Exmouth, and North Carnarvon in Middle Sept, then as summer gets closer it rolls right through to Esperance, how many K's is that versus, what is it from memory, about 40kms of sailable coastline

However, Maui is very beautiful, lot's of fun, and there's probably no 40km stretch of coast with as Much variety in WA, Maui is special and worth a visit, but go when it's cold here!!!!!
Hardie SoftBoy