transom bracket

HELP.... :o

I was told today by a very reputable boat dealer, who also manufactures his own boat line that a bracket on a 20 ft boat is NOT a good idea..

He stated that even with the flotation under the bracket, the motor will submerge when stopping, in a following sea & when drifting with a following sea... He went on & on about the bad things about a bracket on a 20 ft boat.....

I was going to use a 150 to 175 to keep the weight down but he said even this was not good..

I just bought a really nice V20 with a SeaDrive that I wanted to replace with a bracket & outboard, but now I am getting the heebie jeebies.... as I intend to do a lot of jetty & offshore fishing with this rig....

Help please from those of you who have done this.

Thanks,

BlueH2O