I have read many times about people using the slipway at Bucklers Hard and have tried to visit a couple of times only to be confronted with a barrier and keypad. Went again today and now we understand. If the weather improves this week we will have a little trundle up the Beaulieu River in the Honwave T38.
This is what we learnt for all those that might also have wondered.
Cost to use slip in and out is £25 total including parking so not too bad I think