Learn Turkish: Sensörler sayesinde sanki gökte süzülüyorsun. - Thanks to the sensors, it is as if you are floating in the sky.

That's the beauty of sanki! It adds the "as if" meaning all by itself. You don't always need complex conditional grammar (like -se or -sa) when you use sanki. Here, you just use the standard present continuous süzülüyorsun (you are gliding), and sanki changes the whole phrase to "as if you are gliding."

Does the word sayesinde (thanks to) require a specific case ending on the word before it?

For regular nouns like sensörler (sensors), no case ending is needed—you just put sayesinde right after the noun. However, if you were using a personal pronoun, it would need the genitive case, like senin sayesinde (thanks to you) or onun sayesinde (thanks to him/her/it).

I usually see "sky" translated as gökyüzü. What is gök in gökte?

Gök is simply the root word for "sky" or "heavens." Gökyüzü literally means "the face of the sky" (gök + yüz + ü). They are mostly interchangeable in everyday speech, so gökte and gökyüzünde both mean "in the sky."

Can I use süzülmek to talk about a boat floating passively on water?