TiltonBB & ITD...
Agreed! Its the old Air Speed vs Ground speed. LOL!
I was just trying to keep it simple... you need to increase your power to overcome the current.. so if the current is at 5 MPH and you are stationary, you are creating the same wake as you would @ 5 MPH in a no current or wind sea state.
Being stationary in a current of 5MPH your boat speedo will usually read 5 MPH even though you are not moving forward. Your GPS will read 0 MPH. When you move forward through the current at 5 MPH... your boat speedo will read 10 MPH and your GPS will read 5 MPH. However, you will be creating a 10 MPH wake and the engine power will be the equivalent of 10 MPH in a no current or wind sea state.
I totally understand it... I just didn't explain it fully!
Woodsy