Do dowel grips help to get your kip?

I've heard a lot about Dowel Grips helping with your kip. Is this true? Because i am going into level 5 next year and REALLY want my kip so i can move straight up to level 6. All of my friends tell me i ave a good potential of only being in Level 5 one year, but if i dont get that dreaded kip!!!!!! :/ So do Dowles really help?