Hello, and lol, I quit AA around 1.5 years ago as an endgame player (yeah including gear, was something like 7k gs) and still found it as a fun experience. Was nice meeting people and doing stuff only possible on AA. A bit p2w, yeah sure, but it was fun 
@tulukaruk I was talking about how there wasn't just one solution lol.
@tulukaruk Actually, no. You can flip the numbers so there are two answers.
This should work. If you actually do the math, 3.9m would be more than enough length for the planks in the picture, so yes there is plenty of space sticking out on land.
Edit: Please do excuse my 1 minute paint skills.