Visit the Team Iceshanty Proshop
Blue tipz are also an option if you can find them.... They send a signal to your phone so you dont even have to watch although they also have a light
https://www.amazon.com/gp/product/B07R2BSY8P/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1I put these on all my tip ups. Super cheap and work great. Has a light and a bell so you can see/hear when the flags go up.
Buddy of mine was just talking about these. Bluetooth connect, right?