If you are not using bounties, could you not use the bounty chip for the side pot indicators. If you restrict then to only people who pay to be in the side pot. would this not do what is required. You can work it so that the hitman's name is not shown. This should, show up on the players rankings screen. There might be some way to rename the bounties to side pot and also rename the columns on the player ranking screen as well.
Hope i got the jist of this question right and that the answer that i have given doesn't sound to stupid ad is of some help.
From Help files
Bounty chip cost and the Restrict bounties values as well (see below). When a player busts another player out, the hitman (the player busting the other player out) receives the busted out player's bounty chip, and at the end of the tournament, the chips are cashed out, with each player receiving the cost of a bounty chip for each chip they have collected. The winner(s) of the tournament will still have their own bounty chips, and will also cash them out for their cost.
Bounty chip cost: Enter the cost of the bounty chip here, if you have checked the Use player bounty chips box (above). The bounty chip cost is IN ADDITION to the buy-in cost. Therefore, if the buy-in for your tournament is $50.00, and you choose to use player bounty chips at a cost of $5.00, each player should pay $55.00 to buy-in and receive their bounty chip.
Restrict bounties: Check this box if you intend to allow the purchase of a bounty chip to be optional, and you wish only those players who purchase bounty chips to be able to win bounty chips. If this box is unchecked, anyone busting out another player will win their bounty chip. If checked, only players who have themselves purchased bounty chips can win bounty chips by busting players out. If this option is not checked, and a player who purchased a bounty chip is busted out of the tournament by a player who did not purchase a bounty chip, the busted out player retains his/her bounty chip and may cash it in for their bounty fee.