"gain a boost" is correct and usable in written English.
You can use it to refer to an improvement in something, such as an increase in confidence or energy. For example, "The ski team gained a boost after their first win of the season."
However, you may gain a boost of confidence in yourself knowing that your skin is hairless.
For advanced riders the weaker hand can be removed to allow for gentle encouragement of the pig (a slap on the backside can sometimes gain a boost of up to 2 mph).
If that's the case, you are going to have to pause the game and abort the mission and start over from step 1. Try placing mines on the walls but away from you so you can gain a boost of speed.
With a possible IRGC blacklisting inflicting a major defeat to the mullahs' regime, the Iranian people will gain a boosted readiness to raise their voices more than ever before.
In July this year proponents of the veil gained a boost by proclaiming their first martyr.
Chicago gained a boost via free agency by acquiring defensive end Phillip Daniels from Seattle, cornerback Thomas Smith from Buffalo and safety Shawn Wooden from Miami.
In 1972 Spradlin directed two forgettable low-budget movies, The Only Way Home and Outside In, before his acting career gained a boost with The Godfather: Part II.
Although the DPP is more accommodating towards China than it was before Mr Ma took office, if it gains a boost, China will look askance at it.
After serving with the US coastguards during the second world war, Mature returned to Fox, where his career gained a boost from My Darling Clementine and Henry Hathaway's Kiss Of Death (1947).
Open access gained a boost this year when the Higher Education Funding Council for England (Hefce) announced that all UK research post-April 2016 must be open access in order to qualify for funding assessments.
Mr. Romney has also gained a boost from advertising, which has picked up in intensity and frequency this week, the last before the start of the holiday season when campaigns typically avoid the airwaves.
