Double minnow rig advice needed
Wanting to tie up some rigs and had some questions. First how long should I make the top line coming off 3 way swivel and could I make it a little heavier lb test to keep from wrapping around main line? Then how far down from swivel should egg sinker be and how far from sinker should bottom hook be? Was going to make them all 1/2oz , some double gnat with 1/2 oz weight and some with gnat on top and 1/8 oz jig on bottom with 3/8 oz weight. Now if I want or need to go up to 3/4 or even 1 oz in weight can I just take a 1/4 or 1/2 oz split shot and crimp it next to egg sinker??