Here is a picture we took the other day of the wake behind a 17.6 at 20 MPH (GPS) with my 11 year old son skiing. Rope length is 75'. Motor is a 150 Evinrude. Gas tank about 1/2 full.
Below are some pictures taken a couple years ago with a 115. Ropes are 85'
They got up on skis and stepped off with 3 adults & 1 child in the boat.
Backwards and Forward Barefooting
Backwards Barefoot Deep is easy to pull with a 115.
Just punch it and ease off as the footer comes up to back footing speed.
Flat Wing Kite behind an Open Bow 17.6 with 150 Mercury
Human Tow Rope on a BI V Drive Boom.
Please don't try this without proper instruction.