> I think the easiest way would be to turn it over and set it on the sheer
> clamps. Then it is readily apparent if it's twisted. Sight down the
> centerline; the tip of the bow should be in line, and the tip of the stern
> also. Use a dab of glue here and there to hold it together, then turn it
> over and fillet the inside seams. Alternatively, you could hang it
> rightside up from the sheer clamps. Ive done this both ways, and I think
> it's a little easier rightside up. In either case, the four points that
> the sheer sets on should be symmetrical on the boat, and in the same plane
> (level).