Nothing seems to help me when I go sailing, nothing other than just doing it regularly and if I'm out on a multi-day sail I'll get my "sea legs" and it seems to

Nothing seems to help me when I go sailing, nothing other than just doing it regularly and if I'm out on a multi-day sail I'll get my "sea legs" and it seems to stop. Only to return back on land where I'll be hallucinating waves with my eyes closed and feeling like interior spaces are rocking back and forth for days if not weeks.