Woopsey ! 
"I speculate is you need some opposing force" ....all those big words in strung together one sentance
This one sounds less Sinbady......."I've allready made it clear that I'm only a biginner in the waves! But I know how it feels when you need to tighten the curve and pressure the rail with a neutral rig in your hand. It feels like the board is too stiff. The more you press on your feet the the more chance of falling backwards out the turn."
Ok, so tell me what that flapping is all about! By the way I don't accept that the countersteering a bike is such a bad parallell. It's true that you have to fight the centrifugal force of the weel, but I don't belive thats the only reason for countersteering. The more basic problem is that of moving you bodyweight further into the turn. You have different solutions to this problems in different sports. In skiing for example I guess (yes!) you momentarly shift weight to the inner ski, then let the outer ski slide further out of the turn, then finally move your weight back to the outer ski. This effectivly increases your lean angle. I'm not pretending to know a lot about bottom turning, but would like to learn more. I'm anyway not going to accept that the rig has got no relevance. "Oversheeting" is essential in gybe entries, and I feel pretty sure there is something similar going on in waveriding. Have a look at that Kauli homespot vido. Perhaps the rig is not used as a means for shifting bodyweight, but only to increase mastfoot pressure at a critical moment in the turn. And perhaps the bodymass can be moved sufficiently by moving the hips. I don't know. Perhaps we could have a discussion without accusations of various kinds?
I think most sail movement is in response to changes in apparent wind, and the need to power/depower the rig at various stages of wave riding, there is probably an effect on turn radius, as you can turn a sailboard much tighter with a sail on than without. but this may be more to do with board speed, than sail increasing turning power.
In side shore conditions going in to a bottom turn powered up will result in getting dragged down wind, stretching the turn out, that's the main reason for oversheeting.
Going back up the face you have to sheet out to avoid backwinding and having the clew snatched out of your hands by the white water.
Sheeting back in as you come off the lip, does seem to decrease turn radius, you can transfer the back hand pressure to your back foot.
I know that feeling your talking about, half way up the face, oversheeted trying to climb higher, and the board just doesn't respond. The solution to this is to start sheeting out a bit earlier, or get more speed and acceleration out of the initial turn. If the board is stalling half way up the face, the best way to go is down, and pick up some speed.
Thanks decrep
I was about to explain to him that I've never seen any pro sailor sheet in twice in a bottom turn but I think it would be lost on him..... asking a question as a self-professed newbie, then poo-pooing the responses one gets seems to be becoming more common so I'm outa this thread for good
Oh yeah and obviously I meant theorist not nebbs who was the O.P
nebbs if u r around greenhead next couple of days say g'day
Hey Mark,
Might think about it for Thursday...
Others:
Thanks for the posts. Since then I've changed my fin, which certainly has helped, but I haven't really had a chance to bottom turn with the onshore winds at Corros. A dude at the campsite was telling me how to bottom turn in onshore wind so I might try that when it's windy again.
Cheers 
I was probably wrong assuming Goya sheets in more than once during the bottom turn. The videoclip only shows a short sequence. I am used to more onshore conditions where the bottom turn is much longer and the entry takes place long before you are flying dtl. I therefore probably mistook Goyas bottom turn for a later tightening of the turn radius. It's however still a fact that Goya and a few other top sailors use their sails much more radically than the rest, and it would be nice to know more about how and why. A friendly tone on the forum will be useful in furthering our understanding of windsurfing. I never said I was an expert. I know nobody on this forum and can only relate to what is written.
