Good Deal?

[Onthefly]

Hey all. I am in the process of purchasing a Hobie and I'm looking into fish finders. I'm a fly fisherman that loves to fish the harbors and hopefully outside the break wall in the kelp beds (if they show up). Typically I'm a trout fisherman but due to the fact that I live in Orange County, I fish the ocean more regularly now.

My question is, is there a fish finder that works well for both lake fishing and harbor (and outside the harbor) fishing? I founf this deal on Bass Pro, is this a good unit for a Pro Angler 14?

http://www.basspro.com/Lowrance-Hook...RODUCT_BO_VTT1

Says it comes with the "Lake Insight Pro" card that should work well for my lake fishing trips to the sierras. Would this unit suffice in the ocean?

Thanks for you help!!