I don’t know if this is a good or bad endorsement. Maybe this was during one of Rodmans few lucid moments.
I think Trump had a soft spot for Dennis and Dennis appreciated it, hence this endorsement.
It's an excellent one. It reminds blacks and other minorities that they are treated fairly and with respect on Celebrity Apprentice. I'd think a Rodman endorsement will get blacks thinking "what has hillary done for me?" Also "if Trump shows respect to Dennis Rodman, he'll show respect and fairness to me".