This little wiggler is 1-1/2" long from the tip of the tails to the tip of the diving bill. They can be made smaller. And bigger. In fact I've made the same flure with a 1/2 ounce slip weight instead of a tiny bead, so it could be cast with bass rod. I'll have to buy one (a bass rod) someday.
Commercially carved or molded crankbaits cost $5 to $15 bucks these days. I can make these in about 15 minutes.
diving bill: snipped from a gallon milk jug and roughed up with 100 grit sand paper
body: a slightly V-shaped blank snipped from closed cell foam
tails: two feathers glued on with ZapAGap on the body and CA accelerant on the feather
hook keeper: Stretch Magic bead and jewelry cord
variable size bead
#12 straight eye hopper hook
I do fish them with a smallest size barrel swivel 18" up the leader. They cast easily with an wet fly rod. Fish them across and down into otherwise inaccessible log jams or root tangles. Or at the edges of weed beds.
Bigger ones can be trolled behind a drift boat so they continually bump bottom in 3 to 5 feet of moving water, with or without a flyrod. I own several spinning rods but seldom use them. These flures can be made as light or as heavy as you might want.