It is never easy to work for your Dad. My suggestion is to join the service and try to get an MOS that will give you construction experience. Put in your four years, come home with a boatload of money, buy yourself a jeep, and then your Dad will make you a partner.
Right now you are lined up to be 'the Boss's kid'. Sorry to be so hard on you but a year from now if you don't take my advice, you can look back on this and see if I wasn't correct.
My Dad had a plumbing company. I know what you are going through.