I have a 2022 S21 on which I want to replace the impellers of the ballast pumps. I could locate the pumps but they are extremely difficult to access. On my previous Nautique I was able to replace the impellers by just unscrewing the 3 screws of the pump covers. Looks like on the S21 the pumps need to be completely removed from the boat. I'm even thinking of removing the boat floor to able better access....is that the way to go? Am I missing something? Apologies if this has been posted already. Thank you!