The First edition for 1.20.5-1.20.6:

• Uses fabric's components system over nbt
• New command: pgive/powergive to give yourself a power fishing rod
• updated for 1.20.5+

The First edition adds:

• The power attribute: /give @s minecraft:fishing_rod{Power:X} Replace X with the power
• The main logic behind it. So the higher the power the farther the bobber flies.

Enjoy!