Been doing
coast runs for 20 years or so, never called them down winders but they are similar. What I always think is odd how much of a hurry the kiters seem to be when they are going downwind, they also seem to hug the beach a lot more than we do. Sometime looks like they are just getting dragged through the beach break but whatever floats your boat I guess. The good thing is they dont get in your way for long as blink and they are gone. Lately the ski guys are more of a worry as they can be difficult to spot and sometimes there are heaps of them, but useful as shark decoys.
We always take our time and enjoy all the spots along the way. A bit more logistics involved than doing it on a kite (Cant use a bus to get back) but after a lot of years its pretty simple.
Used to take $10 in case I needed a Taxi back and only ever used it once (got in quick before he noticed how wet and sandy I was). Used to do Floreat to Brighton but dont bother with that anymore either as its a pretty boring run and too much traffic.
Can highly recommend it to windsurfers, getting onto a sea/swell and riding it for a Km is a great feeling and keeping away from crowds is great. Only negative is you get out of the habit of checking around you before jybing which can be a bit embarressing if you are around others. Some of the spots offshore actually have some nice ramps and faces on a good day and being deep water theres a lot less to go wrong.
If I cant get a car arranged I sometime do the sail upwind first and then go down wind but thats a lot more work and needs better wind, downwind you can get away with bad wind and still get going.
Since getting a GPS dont go as far off shore (once I realised it was more than 2Km I figured I wouldnt go out there all the time).
heres one from a couple of years ago, this normally takes about an hour or so and is an easy drive/park etc...
and this was my effort at writing www.seabreeze.com.au, just got the www done (this was upwind).