Home made "pulsator" decoy

I'm thinking about making one.
12-volt bilge pump
50' extension cord
Decoy
Some fuel line or hose
Buying one is $100-150
Can build one for way less.
Anybody ever tried? AT?
12-volt bilge pump
50' extension cord
Decoy
Some fuel line or hose
Buying one is $100-150
Can build one for way less.
Anybody ever tried? AT?