The triple action pump from kings is really good, takes 3-5 minutes to get to 15PSI, definitely takes the wind out of you but gets the job done pretty quick. They also sell a 12v pump now for paddle boards but it's around $170 I think.
15psi recommended. There is too much flexibility at 10 psi. Use a small garden blower or any high volume pump for 1~2 min, about 2 to 8psi. Then, the air compressor to finish off. It takes me 7 to 8 min each paddle board.
Man I have an ARB portable compressor and it was taking AGES!!! Used a manual pump I have for an air tent which is up\down and it took 5 mins...but I couldn't get any analogue or digi gauges psi...not idea what I've pumped it up too LOL