If you are handy or find a boat yard that has competent staff...order from www.solidsurface.com
We saved a TON of money
ordering from them. They also have tutorials available.
Last time I knew the big box stores will not sell to a DIY
. But I did use their samples to pick out my counter top product.
Solid surface products like Corian are very similar to working with wood. Saw, router, palm sander, and polishing wheel
along with patience are all you really need. The good news is, you could replace the project
5 to 10 times of what hiring a marine professional would be.