If using 3 strand, and anchor bend is fine so long as you tuck the tail through the lay of the rope.
Likewise I've heard people say a bowling will never come out, which is true so long as it's always under load, if the tail goes slack a bowline can come undone, best to tuck the tail through the lay or if using multiplait put a half hitch in the tail to secure it.
The great thing about a bowline is that it will always come out even if you need to use a hammer to break the back of the loop.
Or if you can't tie knots.......tie lots.........
I must go down to the sea again to the lonely sea and the sky
All I ask is a tall ship and a star to steer her by
the wheels kick and the winds song and the white sails shaking
a grey mist on the seas face and grey dawn breaking