If you really want to help improving the dynamics, you can start posting sea trial reports here on the forum. If you have access to a report from a HSC similar to Red Jet 4, that would be really interesting...
Regards
groennegaard
not only similar, exact the red jet4. here,s the link with trial results
http://www.nwbs.com.au/net/39.html
35kts service, 38.1 kts max speed full loaded, 41kts max light loaded.
the most realistic value for shipsim purposes would be so 38kts max speed.