It just slows you down. You're not even rolled for 25NL.
If you absolutely have to take shots, it should be at 25NL.

No more playing 50NL! ...unless you're playing me HU. Everything else is just silly. Loosing just 1BI will take you 7k hands at 10NL to grind up again. It's plain stupid to take shots for 1/10th of your BR. Don't do it.

Here's some advice for you:
http://www.youtube.com/watch?v=bVVsDIv98TA