This highly portable ( only 1.2 lbs ) 12V electric inflator and deflator will make quick work of inflating your paddle board.
Simply plug into your cigarette lighter and it will give you a helping hand, inflating your board up to 2 psi. This will save you about 150 hand pumps!
Finish inflating to your recommended psi with your manual hand pump.

A great alternative if you'd like to reduce your pump time but not spend a lot on an electric pump.