I use my iPad on the flybridge all the time. In direct sunlight it is a bit hard to read but most of the time it is just fine.
I use Garmin BlueChart mobile with Active Captain all day, every day. In addition I have a Rouge Pro WiFi booster antenna networked through a Net Gear router. Pretty much everything on the boat works through the router including the TV, Apple TV, other computers, iPhone, printer, etc.
I simply would not be without my iPad.
Best of Luck,
Marine Trader 36. Completed the Great Loop (single handed). Now cruising the east coast and Bahamas.