Nah - different benefit there. The problem with forward mounted daggerboards is that they are so far away from the rudders that they, in effect, make the turning radius of the boat very large...makes it difficult to tack quickly and efficiently.
Sort of...with daggerboards further forward of the rig, the rudder needs to load up more to prevent rounding up, this is weather helm. If you go too far forward it is hard for the boat to bear away from head to wind during a tack because the boat will want to weater-vane around the centreboards (approximately the centre of pressure of hull and appendages).
It is also better to think of the centre of pressure of the sails and boards (underwater part of hull and appendages) relative to each other, rather than their position relative to the hull. The centre of pressure is fairly close to the centre of area of the sails and boards.
A little bit of weather helm is good for VMG, safety and the general feeling of the boat.
some basic explanations.
http://en.wikipedia.org/wiki/Weather_helmhttp://www.onemetre.net/Design/Balance/Tune.htmhttp://www.sailingusa.info/sailboat_balance.htm Lee or weather helm has to do with the center of effort of the rudders as they related to their pivot axis. The degree to which the rudder helm is sensitive to various rudder rake positions depends on the center of the lateral resistance and the drive for the sail plan.
Your links are mostly related to monohulls and there is a different thing happening there. As their hulls lean, the shape of the hull presented in the water changes dramatically with high angles of heal. The boats tend to lift their sterns and drop the nose (since the bow is slab sided and the back wide and rounded). This changes the presentation of the sails to the wind and it angles the keel downward. They develop severe weather helm with too much lean and tend to lose traction on both the keel and the rudder.
Because the angle of most rudders are fixed on monohulls, it's become common practice to think of lee or weather helm as a sole function of the relationship between the center of the sail effort and the lateral resistance center of the boards, keel, or hull. However, this relationship is actually simpler than that. If your rudder is perfectly balanced between it's own center of lateral resistance (or center of lift) with it's center of rotation (pivot axis), there will be no helm whatsoever - it will be completely neutral regardless of the relationship between the sailplan lift and the lateral resistance in the water or any changes you make in that relationship. If the rudder is off-center with it's center of rotation, you will experience helm and depending on which way it is off center, it will be weather or lee helm. That helm loading experienced
will be increased or decreased with mast rake or daggerboard position, but it's not the reason you have helm.
