We do not have the perma trim but have Lenco tabs and we have 100 ft of chain for our anchor in bow The cd 22 definitely need weight up front or the permatrim The cc23 Venture doesn’t seem to need it as much IMHO
We run at 4000 rpm at 20mph /17knots this is the sweet spot all the way up to 4500rpm at 25mph I’ve averaged about 3gallons +an hour for almost 4years of boat use