I have big issues when it comes to generating speed, when I used a longboard I only had to walk a little bit forward, but on my shortboard(6.4 x 21.75 x 3 1/16, I know pretty massive) I can't get it right, when I try to pump I don't feel confortable or speeding in any way, also, when I move my foot forward I feel that the board generates a lot of drag and slow down.
Any advice for this? You can see a video of it on the link below. Thanks and good vibes!.

https://www.dropbox.com/s/xk0918myktjzz ... 3.MOV?dl=0