I did that on both ends of my skyway but it wasn't enough to get me across and past the booster on the other end and up to two track hill.
When my middle booster works, it works. but it only work 50% of the time. I guess you need to come from a incline as it seems. i'll have to mess with my middle one.
There is also an uphill booster that is VERY effective. i will search for it.
