The shoreline is not safe according to NOAA because it is either an open space and you are the tallest structure or you are too close to tall trees, another no no. My strategery, if in a canoe or kayak, would be to:
1. At the first sound of thunder or lightning of an approaching thunderstorm, get to the shoreline asap
2. Take your life jacket or foam sleeping pad and appropriate clothing to remain warm and dry, leaving anything metallic behind
3. Go beyond the trees about 200 ft if possible and wait it out with the 30-30 rule (or whatever you feel comfortable doing)
4. If you cannot get 200 ft into the trees, look for the lowest spot but stay about 40 ft from the treeline and assume the lightning safety position (squat down on pad, feet together, head down, hands over ears)
5. If you are with several people, spread out at least 15 feet apart, but within hearing distance of each other
6. At any time, if your hair stands on end or you hear other evidence of impending lightning strike nearby, assume the lightning safety position
7. Pray for your life and repent of your sins : )
http://www.lightningsafety.noaa.gov/outdoors.htmhttp://www.lightningsafety.noaa.gov/resources/LightningFactsSheet.pdf