that you have an invalid image in your mind of what you are doing vs. what you think you are doing (ie. what examples you have seen). This is common in physical activities and even great athletes form habits that aren't "perfect" in form unless someone can capture it and demonstrate it to them.
If you can have someone take video of your stroke, you will probably be able to compare that video to, say, that of a proper stroke of a paddler on youtube or other video source.
Right now, you are probably watching your paddle stroke more than the horizon and this is likely the factor causing dizziness. The torso rotation should stop at the neck. It's okay, even good, to look around, but if you are rotating to the point where your head is moving as well, you are either rotating too far for your range of motion or following your stroke with your eyes. At the end of your stroke, you should still be able to look to the left for potential traffic or activity when the stroke finishes on the right.
Canoe / Kayak Anchors
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