When you get the chance, I recomend wool tuft testing her, real world testing beats amateur cfd by a long stretch and its also very cheap. here's a video how to do it
https://youtu.be/dUPLa2mQgLE?si=9oI6mOj8d4rfF_Oj
This only works if the wool isnt entirely wet but it wouldnt hurt to try. When I do this type of testing on my cars I usually have two car driving paralel to each other, the test subject and the camera car (keeping in mind to not drive too close as the turbulence from the camera car can influence the subject's airflow). For your aplication it should be liltle more dificult to film this way due to the constant up and down movement of the camera on a moving embarcation. what I would try to do have a cameraman on a stationnary embarcation, or even land if possible, and have you drive past a couple of times in different directions.
also dont forget to tuft the inside of the boat and have someone record, or if its not too dangerous you could film it youserlf while driving.
This is a very intersting subject and I hope to hear from you in the future