Picking the best of anything is asking for an argument but I thought folks planning a visit would benefit from the discussion.
Let's start by listing my choices in order of best first, first because they have overnight docks, followed by some pros and cons and a few real world comments. (hopefully I haven't omitted your favorite) Keep in mind, we go to all the parks and don't dislike any but there is no doubt some parks are five star and some are not depending on what we are doing or the weather during that particular cruise.
For a more detailed review of the San Juan area marine parks including maps try this post. marine parks
parks with docks
Jones Island
Matia
Sucia - Fossil Bay
James Island
Stuart Island (Prevost & Reid Harbor)
Sharpe Cove and Cornet Bay at Deception Pass
parks without docks
Saddlebag Island
Pelican Beach
Turn Island
Eagle Harbor
Cypress Head
Patos
Sucia (Echo and Shallow bays)
Spencer Spit
Odlin County Park (has 2 hr dock)
Clark Island
Doe Island
Obstruction Pass
Sidney Spit Marine Park (Canada) (has overnight dock)
Washington Park (launching ramp only dock)
San Juan County Park
Shaw Island Park
1 - Jones Island is my number one choice and here's why
Pros:
bigger but not biggest dock
protected bay
great dinghy beach with a couple tidepools
anchor buoys and lots of room to anchor
running water and four nice nearby composters
hiking the many loop trails at Jones never gets boring
tiny deer, many tame, are unique to Jones
dock is very close to camp sites for evening fires
Patos is as far north as you can get and still have some land to land on before entering Canada.(Okay, I know Point Roberts has some land)
Patos is just north of Sucia, hardly two miles depending on where you measure, so you can run up there in just an hour or much less.
What you will have when you get there is two islands, Patos and Little Patos, together they create a pretty cool little anchorage. Run your boat all the way to the north end and enter alongside the lighthouse, have your camera ready, its a picturesque place for sure. There are no docks so puttster up to the dinghy beach and drop anchor in front of the picnic area. Back in the woods 75 yards or so is a nice campground along the trail to the lighthouse.
Basically there are two trails to hike. There is a one-miler or so that makes a circle in the woods and is sort of boring, so you have been warned.
The other is a ten minute walk out to the lighthouse and most of it is akin to a road. Be sure to visit the lighthouse, recently volunteers have been holding open house during peak summer months. Inside they have old photos, scrap books, artifacts and you can climb the light tower. (it's hot up there if the sun is out)
If you want to keep your walking to an absolute minimum on perfect concrete pathways, run your dinghy ashore next to an old concrete thing with a post
sticking out of it.
It's left over from when the coast guard needed a landing spot. This concrete thing is well inside the protection of the anchorage bay, but its at least halfway or closer to the light house. You will have to scramble up a rock or two, but right at the top begins a three foot wide concrete path that goes all the way to the light house. We choose this route if we are only headed for the lighthouse, its saves rowing and walking, and if we are anchored right in front, why not!
A little warning about the tiny channel
between Patos and Little Patos:
Yes you can run your boat through there but, there may be a current and at low tide it gets a little thin. It's kinda creepy when you can see bottom on both sides of your boat. We take our boats through, but only dead slow into the current, never with the current. If you are the least bit concerned, just go around, it's only one or three minutes and you get to take a picture of the lighthouse to boot.
I recommend visiting Patos for lunch or
spend the night,
On our last trip to points further north we used Patos as a jumping off point and a return point, it was like coming home.
This is the concrete thingy, (you have to see it) the teensey dinghy beach and the trail is to the left between the rock and the post. BTW, you could anchor here and stern tie to that post. You can see the picnic area and main dinghy beach way, way beyond the anchored boats, so this saves some walking and rowing.
This trail was built to US Coast Guard standards, it's probably a foot thick.
There is a lot of old foundation concrete out in the grassy areas on both sides, with a little sleuthing you can figure out where the buildings were, and imagine much of the original installation. Pictures and drawings inside the building show where everything was.
Volunteers camp in the campground and maintain hours for visitors, you could spend several hours inside learning the history, its well on its way to being a museum. Don't forget the Stuart Island lighthouse has a similar setup and they do call it a museum.
Click below for a satellite view of the Patos Island anchorage