Always make sure you have a waterproof locator satellite beacon, sat phone, survival suite, first aid and enough food and water, etc etc etc in case you get broke down in remote spots without help around. Chart you trip well in advance and mark the fuel and moorage spots and don't travel in risky weather and you should be fine.
I have had much better success with BuoyWeather being accurate over the gov marine forecasts. Some times the gov forecast was off so badly last year it was completely opposite of the actual wind/weather we were getting on our trips.