Dave, as someone who has been on the periphery of raising funds for R&D here is some of what I have learned along the way.
If you require $30,000, you need to raise $100,000... When the $30,000 runs out it will be far harder to raise additional funds, and the money you need now may only get you to the next step.
The crowdfunding sites, at 15-20% sound expensive, but they have active markets of willing smaller investors.
I would almost suggest you are better to raise $10,000 now, use that for a killer kickstarter or indegogo campaign video and try raise $250,000 or $1,000,000 which can be easier than raising $30,000 - particularly if the technology has applications far broader than surfing - eg all the large marine underwater survey companies have an OH&S obligation to arm their people with shark deterrent devices.
How good was these guys video...
www.indiegogo.com/projects/flow-hive-honey-on-tap-directly-from-your-beehive#/story Its a noble cause you are fighting and I think you need to be fishing in the bigger pond to get this thing flying.