I dont think peaks and troughs on graphs relate to development and progression. Some fulltimers have come out +ptBB/100 for 100k hands at a certain limit and then broke even at the exact same limit / site for their next 100k hands.

Im suprised how tight you are coco, but your winrate is very decent. Ive heard the skill jump from 400-600nl is quite alot and think if you want to ever crack 5/10nl + for a decent winrate id imagine you need to loosen up a bit more. ... ur pfr is probably a bit too low.. its pretty obvious what your raising... though below 3/6nl this may go quite unnoticed from most oponents.

If you want to try and open up your game i cannot recommend the cardrunners.com videos enough

BTW Ive just noticed that is a sick amount of hands to grind through since april.. congrats on that. Im temporarly playing fulltime but find it hard to play more than 20hrs per week