I was testing this plugin on my one grid server, my friend drove me to cargo to counter are friend and i ended up clipping through the entire ship. Is there any way to fix this?

Thanks for reporting. I'll see what I can do to address this. Have you tested to see if it's also an issue without the seat?

Here is a beta patch I would like you to try. It adds a collider approximately the size of the chair. Let me know how that works out.
https://raw.githubusercontent.com/WheteThunger/RidableDrones/develop/RidableDrones.cs

Merged post

I released v1.1.1 which adds a collider to the chair. I tested it with player buildings, monuments and cargo ship. I also tested with the parent trigger and could not clip through objects with that. Let me know if you experience any more issues like this.