Is 90 hp adequate for 1967 19'6" bowrider?

[doughert0]

Thanks. I use a 13/17 SS prop. I top out at about 5800. Don't know why I seem slow - I use the GPS to measure my speed in kts, which works out to 28-29 mph. I rarely hold it at WOT, generally cruise at about 5000 on smooth water. I will post a photo later in the day, when the sun is right.