There are two playlists on Youtube containing the stuff you look for.. just search for polo shirt wam, and you will find a number 1 and number 2 playlist. Also Saturation Hall (posted above) is well worth following! They never disappointed me!
Also, a few other producers/models did a very good job doing some customs in the past for me.. all to find in the downloads section of UMD and clips4sale. Being not so fortunate of money anymore (not because of them), I still owe these people a lot of honour of doing such a great job of producting and customer-service!!
However, like said before, if you're looking for the most polo-contaning wam-scenes, Saturation Hall is the place to go
DungeonMaster is just incredible! Imagine, in your fantasy, that the genie appeared from the magic lamp and offered to grant you any wish that you liked! It would be DungeonMaster, I think, who would be listening and it would be DungeonMaster who would find just what you wanted! Well, I think that Lady Aramanth is looking especially wonderful here!