GOOD NEWS. . . . The PICTURE UPLOAD FUNCTION IS WORKING !!! The tech folks at the parent company have been able to remedy the issue. You can upload pictures once again. Thank you for your patience.
Re: What RPM should I be running?
Get the manual for the engine you've got, it will have the manufacturer's rating for most efficient RPM, and also should have a chart for best all around prop pitch based on boat size/weight.
Think of it as a car; you always want it at the most efficient RPM...