That is exactly what I do on short boards, only 100 times slower. I generally look like I'm climbing onto a walker, but the end result is the same. I do it a lot from a seated position too--it's actually easier than from kneeling. Getting my front foot sufficiently forward is the biggest challenge--sometimes I pause in the middle of the "pop" (which is more like a gentle whoosh than anything explosive) to shove my foot forward with one hand.
Whatever gets you to your feet in time to do something constructive is just fine. Whenever I get shit from a surfer about being on a standup I always say "Yeah, the part everyone gets excited about is popping to your feet. Hey, nice pop. Your surfing sucks, but man, can you pop up."