Gentle's team got the better of their opponents 14-4 under rainy condition at the KC Stadium to progress to the preliminary semi-finals of the competition.
"We learned a lesson about a month ago about playing in these conditions," BBC Sport quotes him as saying after the match.
"I can't doubt the courage and character of the group. There were players entitled not to be out there tonight.
"We are down on troops and there was a lot of courageous effort out there. It was a great team performance but I thought our senior players were terrific."