Boat speed affects 2 things.
1. The burble
2. How much costs wind component. The more own wind the boat creates the more this will be. Assuming that if there is natural wind the boat is turned to put that down the runway.
Other than that there is no different between a 30kt natural head wind and a 30 it boat head wind to you it’s the same. Your approaching the boat at the same Ground speed for the on speed air speed your on. Don’t over think it.