That shad pattern is a great shape for gliders.A friend of mine makes a nice 4 inch shad glider made from 1/2 inch oak board from an old pallet he found at work.One thing to remember is longer the bait the wider the bait needs to be. The seven inch bait you were talking of would work with a 3/4 inch board. I like a sharp nose on my gliders it helps the water flow around the bait. Think of it like a v-hull boat if you are pulling nose first it slips throught he water with little effort. Now if you have a blunt nosed bait it like trying to drag the boat backwards, There is a lot more drag and water will not flow easily around the shape of the transom( you can still get it where it needs to go but there is alot more work involved).Im not saying a blunt nosed bait wont glide but there is more work involved on the bait to make it work.Mark as far as weighting a glider you have to play with the weight position to get a horizontal or flat lay in the water, the shape determines where the lead goes.And as far as a silver I just love foil on gliders thats just my . Gliders should slip through the water column gracefully with little effort( once again this is all just my opinion, Im sure someone will think different)