Firstly I'm sorry for my bad english, but I hope you understand me?
I'm completly new in this univers, but I belive it's the way for solving my little problem.
Today I control my trollingmotor with a PWM where I can ajust speed with a potentiometer, and direction with a 1/off/2 switch. This setup I want to make wireless, but I don't know if it's possible to make a device to replace potentiometer and switches, or I have to "build" a band new controller. If so I found this (see link below) on the internet, is that useable? My motor runs 12V/16amp.
My question is:
Is it possible to make the controller in the link to be wireless, and that do I else need for this projekt?
First thing, you need to check if the stall current of your motor exceeds the peak 60 amp current of that motor driver. When connected to a propeller your motor is likely to briefly draw close to stall current at startup.
It may be easier to replace the complete control system rather than modify the standard system for wireless control. It also means that you can revert to the standard system if your wireless experiments don't work.
One option for wireless control is to use an Arduino with an nRF24L01+ transceiver module as the transmitter and another Arduino and nRF24 as the receiver. Have a look at this Simple nRF24L01+ Tutorial.
Make sure to build fail-safe behaviour into your system and a simple manual override.