All invincibility glitches were rooted to when you go to jail, because in your jail cell, nothing could hurt , by simply making it so that when you're in your jail cell, you cannot take out your weapons, proving the glitch to be useless unless you're going through a stroll somewhere. Same thing with the ship invincibility glitch, the Big-D made it so that when you wait for a flag ship, you wouldn't get attacked by any other ships. Now, you can still get your ship sunk while on a flag ship. Although, there are ways around these glitch-fixes. Like there is one I know of with the invincibility glitch, but its not a good idea to post it because it gets over-used, and bye bye glitch! I'm sure those observant enough can figure it out
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