I wonder in which situation you need to use that sentence :) it is directly translated as "봐주셔서 고맙습니다". To be formerer, it is better to say 시청해 주셔서 감사합니다 or 관람해주셔서 감사합니다 Hope this hleped you. Have a nice day.

봐줘셔서 감사합니다 봐줘서 고맙습니다/고마워요 봐줘서 고맙다. decreases in formality down the list

I think it can be different for different situations. for example, "Thanks for watching CNN"... in korean, "CNN을 시청해주셔서 감사합니다." , .... on the other hand, in English, "Thank you for watching my house", in Korean "제 집을 봐주셔서 감사합니다.",.... Fighting!