I went about the same time frame during the Spring of 2002. I was there for four days/five nights and only saw from Kennebunkport to Pemaquid Point. I took the cruise with the Casco Bay Lines in Portland in the afternooon/evening hours and it got real chilly out over the open water. Of course I had the family in tow, so there were other items on my agenda besides lighthouses. Lighthouses I visted were Portland Head, Rams Island Ledge (from afar),Cape Elizabeth Twins, Spring Point Ledge, Goat Island (from afar) and Pemaquid Point. Yes, you have to go down on the rocks below Pemaquid Point Lighthouse. I have a picture of me with my arms wrapped around my three year old daughter at the time looking out in the bay that is absolutely priceless. To get to Pemaquid it was of some distance from Hwy 1 and back on a single lane road. I hope to get back some day when I have more funds for travel and time.