I am new to the sport of rc boats. have wanted to have a couple of boats for a long time but other thing got in the way. I have a 48" v hull and a bonzi cz out drive and was wondering how to mount it in the right spot so everything works like it is supossed to.

Don't know the drive, but if a surface set up ? ..... C/L of output @ 3/8" or so above keel and centered side to side.
* A lot will depend on how thick the hulls lay up is down in the V of the keel. I try and set surface drives on monos as low within V as practical.