OK, I've been in discussion with the seller and have better assessed my needs regarding a WDH. We've come to an agreement that he will pick up the Pullrite assembly and refund me money off the price I paid. This fits the situation better than any other outcome because I will have a WDH without the hassle of having to install the Pullrite, I won't have to engineer a solution for pulling other trailers, and my cost goes down. He will have a full Pullrite that he can sell for more than the original price of what he sold both to me, and all will be happy. Two things not mentioned are that the seller and I are separated by 70 miles and the Pullrite frame mounting brackets appear to be for a Ford van and not a pickup. The latter would not be a deal-killer for me if I wanted to install it as I have a welder and metal fab tools.
Thanks for all who clued me in to how the Pullrite works and it's advantages, especially Barney for bird-dogging the other Pullrite that was for sale. I may regret not using the better hitch in the future but the Equal-i-zer fits my needs better at this time. Thanks guys!