Catch arapaima at Gillhams. You will need the DLC for it and prob 15k TP as you will have to have 80lb braid, some sort of size 2 hook and dead/cutbait. I am not sure if there is a faster way to level up and get TP but in the last few days iv landed tons of them and gone up about tons of levels. The other good thing about this, is that you will bycatch large catfish (redtail) which also weigh around 100lbs and less. Great way to get exp fast as most of my arapaima have been over 300lbs, the biggest being 522lbs. The only downfall i see in this is that they take roughly 10-20 mins to bring in so it gets boring. Hook one, hold the reel button and play a video/game on your phone. I used this to get TP to buy more baits for fishing the elite career tournaments. Good luck.