Here are some points that for me needs a little improvement on the turtle mount
-- movement on land when moving forward is good,, however,, it's not as smooth when turning on the sides.
-- movement on water is not as easy to control too.
-- turtle mount under water is like a submarine,, it would look better if the jets are facing horizontal ( both in front and in the back) instead of it facing vertical (like a space ship)
--canon does not work under water, it only works on land. Perhaps it is better to add missiles that would work under water while the canon works on land.