The standard macerators we use are a blade discharging system; however we have installed the Whale diaphragm fish box macerator on one of our 375TE. They seem to like that pump and have made several positive comments about the product. Going this route would eliminate the need to install an additional thru hull for discharging; the pump would just be spliced into the existing hose. Here is a link to the Whale macerator website. I hope this information will help you make your decision a bit easier. Thank you again for using our forum.
Warranty Service Manager