Get to Haines. From Haines head south on Mud Bay Road. Around 7 miles the road comes up over a hill and turns, into the turn there's a wide dirt road (Chilkat State Park Road) to right. Stay on there and it will take to you to the state park where you can park.
Be aware of tides and weather forecast before heading out.
Seduction Point Trail is a fairly easy hike, just mind your footing. The trail travels along the shore to the southern tip of Chilkat Peninsula.
Highlights are of course a nice hike along a Alaskan wilderness coast line, but also views of Chilkat Inlet, Davidson Glacier, and the occasional Humpback whale, Orca, or Harbor seal.