The real problem I see with the toggle bolts you show is they appear to
spread the load out onto the two edges of the plate that ends up under
the deck. This is not a flat bearing surface, and concentrates the load
on two relatively thin edges. This is not a good idea on a laminate
surface, as it will easily crush the laminate, even if you've
reinforced it with thickened, high-density filler, epoxy.

The load really needs to be spread out over a large surface area when
working with laminates. The toggle bolts can't do thisÑthe concentrate
the loading stresses onto an area smaller than that of a proper backing
washer...