whoa. explain this again, please. What do you mean ripple? So just draw it and watch it and it ripples big, then wait until something bites?
After you cast, you can tell by the second tug whether it's a guardian or not. If either of the guardians is checking your bait, there will be a lot of ripples, and spray coming up off the water every time it ripples. If you don't see the spray, it's a different fish and you can abort so you're not wasting your time - just hit O to pull your bait back before it bites. It won't count that as one of your allotted attempts and it'll save your bait.