The Watchtower cult is completely unworthy of consideration when it comes to fundamentalist debate.
Purely a cult and without root in scripture or logic.
"The doctrine of the Holy Trinity has been consistently misunderstood, probably more than any other teaching of the Bible."
There is a reason that it is misunderstood.....
It is completely at odds with Biblical precepts, and it is a notion contrived originally designed to incorporate pagan beliefs with New Testament principles.
I refer you to Acts chapter 2 verse 38 and the entire book of Acts. I defy you to show a single instance where an Apostle ever baptized a convert under any name remotely resembling the formula that has been invoked by organizations referring to themselves as "Church" over the last 17 centuries. You'll have a tough time meeting that challenge. Happy reading.
I realize that it is a waste of time, but every once in a while it makes sense that folks ought to have a different perspective to consider. In this case, the Word itself is your antagonist.