Blend coconut milk and curry paste together with a stick blender until smooth. Place steaks in a glass or ceramic container and pour marinade over. Cover and refrigerate 4-24 hours.
In a medium saucepan, bring water to a boil. Add rice, coconut oil and salt. Cover and lower to a simmer for 15-20 minutes. Remove from heat and stand, covered, for five minutes.
Take 1 cup of the marinade and put it in a small saucepan with the lime juice, the remainder of the sea salt and honey. Bring to a boil, then lower to a simmer and cook, uncovered for about 45 minutes (or until sauce reduces by half).
In a heavy cast iron pan set to medium high heat, sear steaks (try to brush most of the marinade off) for 2 minutes per side. Let stand five minutes before slicing thinly.
Assemble the boats: Scoop out the middle of the cucumbers with a small spoon or melon baller. Place a small ball of rice in the hole, pour about 1/2 tsp of the sauce over the rice. Finish by placing a slice of steak on top. Serve immediately or cover and refrigerate. Serve within a few hours for best flavour and consistency.