We had a spinnaker made for us with the SEAWIND logo cut into it by Olympic Sails in Sydney, Australia.
The kite is made from silicone coated spinnaker cloth and the logo is also from the same material. The logo was cut out of the kite then the logo was cut out in the appropriate colour material then sewn into place.
It was a little pricey and labour intensive but looks very trick and is also very durable..... worth the money.
