Looks like you carry a good amount of speed coming off the bottom of the wave and then try to change direction midface. I think your right arm is counter rotating/balancing like it would if you were going for a snap at the top of the wave.
I think it would smooth out a bit if you continued your line to the top of the wave.
Nice takeoff.
Replied on Month of Surf Training in September:D...
23 Sep 02:20
Michiel van Gerven I bought the basis paddle trainer in May, but I haven't used it much over the summer since I've been surfing regularly (albeit not great waves).
I am planning to use it more through the fall/winter/spring to maintain my paddle conditioning when the paddle outs are more challenging and my surf sessions are more spread out.
My initial impression is that it does feel pretty similar to paddling in the water and it does get tiring pretty quickly. Might give some more thoughts on it in a couple months after I've used it more.
I have benefited from the therapy band shoulder exercises he recommends as a pre-surf pre paddle warmup.