No, you should keep throwing that Destroyer.
I broke 400' flat land (twice) for the first time after borrowing a Destroyer for a tournament this weekend, never thrown one before. I have trouble consistently breaking 350' typically with my fastest drivers (Avengers and Valkyries). No OAT, no distance flexing, just a frozen rope 400' bomb thrown low to keep it out of the wind. So if I can handle that disc, you definitely can.
If you can pump a TL 360' what is the point of discing down? The TL is slow and understable, so an accurate 360' with it means you have good enough form and power to throw higher speed stuff.