Sucia Island Marina State Park – As long-distance cruisers, we are routinely motivated by an appetite to explore the unknown. We push ourselves to seek out that which we have not yet seen, filling in with returns to some of our favorite finds. Sucia Island is one of those "return" places for us – this being our third visit to this horseshoe-shaped island refuge. We still remember the first time we set foot on this island paradise with its natural sandstone caves. The park includes 564 acres of parkland with over 77,000 feet of shoreline Spanish explorers, circa 1781, called…