According to Wikipedia the laying down of the keel is often marked by a ceremony attended by dignitaries, and again we can supply dignitaries to suit your needs so long as you provide the catering and escorts. Drive a screw through to the hub that follows the angle of the ski when under no undue pressure; the screw shouldn't be so long as to fix the boat to the floor (Ed. he did this with PVA yesterday).
With its rear end supported on a couple of G-clamps fixed flush with the underside of the keel and a weight to keep it in place, slide the hydroski until you achieve the preferred curvature. I like it to run straight in the run-up to the leading edge of the keel, which with a 6' (1830mm) ski leaves a 1" to 1.50" (25-40mm) excess... you may wish to remove this for religious reasons, or to provide the footing for a rudder-post.
I personally prefer to remove the excess, because this allows the boat to be stood in the corner of the room... Patrick Swayze permitting. Unique among boats too, this means it can be left standing in order to drain off.
