RE: Any advise to install retracts in a weston magnum??
From all accounts, it sounds like this plane is already at it's upper limit for wing loading.
Nothing could be less "user friendly" than an overweight airplane.
Learn to do a hand launch with your left hand while maintaining thumb control on the TX in your right hand. Keep the right wing panel slightly low and aim for a level launch. Do not attempt any forcefull throws, just give it a steady "send off", allowing the plane to start out with the nose level so it can get lift as soon as possible.
Do not accept help from others unless they understand this advice.