Take the Jet, or thow on a Disc
Have you ever heard of a Lil’ Diver, Jet Diver, Mini-Disc or Dipsey Diver? All are tools that an angler can use to take their favorite shallow crankbait, spoon and crawler harness down to a desired depth. Like the bottom bouncer, all can be used instead of a downrigger system, and allowing for more versatility.
The Fishlander Lil’ Diver is a 2″ disc that is similiar to both the 1, 3/4″ Mini-Disc from Big Jon and the Luhr Jensen Dipsey 
Diver which comes in multiple sizes. The Jet Diver, also from Luhr Jensen, comes in several sizes as well.
The various sizes of the dipsey and jet allow you to take a bigger bite out of the water as you increase the size of the diver. At some point you have to figure in the trolling speed, possible depth of fish and depth of the water in choosing which sizes you want to use while fishing. The larger Dipsey Divers are extremely poplular when fishing for salmon and trout species in Lakes Michigan, Huron and Superior.
I always seem to buy things to get started, and later seem to find a better mousetrap later on. Sometimes I can come up with something that I can make myself for less money that is just as effective, but molding plastic just isn’t in my future plans.
So with all the the different types of divers out there, what would I pick up for the Plano box to get started? I would start with the Lil’ Divers from Fishlander. Like the Big Jon Mini and Dipsey (most models), they have a swivel plate with a weight at the bottom. This is to control the direction you want the diver to take, straight, port (left), starboard (right) or shallow. Weight forward for deep/straight, shift to the left if you want to go port, and to the right if you want it to swing starboard away from the boat. Reverse the weight to the rear if you want the diver to run shallow, which is good for spring time walleye while using spoons and cranks before the eyes head for deeper water.
So why the Fishlander model, because they come in a 2″ clear model. Its also easier to find in the stores than the Big Jon two inch disc. Running depth is easy to remember as well. When your boat speed is 1.8 to 2.5 mph, depending on your line diameter, you can translate one foot down for every 2 ft of line you let out quickly. So if the fish are 20 ft down, you let out 40 ft of line. Running depth bottoms out between 40 and 45 feet. The clear plastic make up also allows for a 
stealth approach, or a quick change of colors by using the stickers provided, or ones you cut out yourself.
Jet Divers can be purchased in a variety of colors, including clear. Most commonly the sizes 20 and 30 are used for walleye, while the 40 and 50 are used for the salmonoid species. Size 10 can be useful during early spring fishing to target suspended fish in roughly give or take 15 foot of water. Jets tend to run truer in rougher water, but don’t have the ability to swing away from the boat like the round divers. Best applications are on planer boards are directly behind the boat.
Handy thing to have right in with your divers is a small phillips screwdriver, most of the small discs are adjusted on the bottom with a small set screw.
good luck