I have/had one. I got it not because of water pooling but to try to kee some of the thundering noise from the top flappind down.
It worked at first but as the fabric streatched out, the fabric started tapping against the prop which became anoying so I stopped using it. Also it made the top look funny with a buldge in the front.
The new Bestop NX tops come with a rod like it but have foam on the rod where it meets the top which I should try
2003 TJ, 33" BFG AT, 2" BL, 2" BDS spring lift, Truck Lite headlights, Homemade sunrider top.