I don't know if this will work on larger boats but on my 16ft, I power down completely when coming up to a NWZ. When the following wakes catches up and gives me a 'kick' I add a enough power for steerage purposes. This is usually enough that I don't have any wake crossing into the zone.
Since this reduces steerage ability it may not be prudent in congested conditions. In that case start to reduce speed further out and gradually.
Good luck!
|