How to use a super telephoto prime

How do you guys find super telephoto prime in term of ease of use? I had a 500mm FF prime before and it was quite hard to find the subject. Like I find the subject then look into the viewfinder and be like “what am I looking at?”. I preferred zoom because I could zoom out to find the subject then zoom in. Now I am wanting to try prime again for the weight factor. This is just my short experience with prime super telephoto, does it get better with practice? Any tips? Thank you