I asked this before and only Popcan responded but has anyone noticed anything about how successful they are at this game vs the number of players playing. I know it will not effect the math of the game but in a real setting does anyone seem to get more paying hands especially the trips bet when they are heads up vs a full table. I have had more success one on one with the dealer vs a full table. My sessions seem to go either way either I get killed or I win a fair amount with the house edge on this game being fairly low I did not expect it to be so volatile.
House edge is almost completely unrelated to volatility. As shown on the Wizard's strategy page, the average amount bet per hand is over 4x the ante bet. So if you're playing green chips at UTH, the volatility is approximately the same as black chip blackjack. Plus there are jackpot payouts on the blind and trips bets, which increases the volatility even more. Even if the house edge were zero, there is the possibility of winning or losing a lot in a short period of time playing UTH.
One big difference when playing heads up versus playing at a full table is that you'll get more hands per hour heads up. If you're getting three times the hands per hour you'll hit the trips bet three times as often (as well as lose three times as often). This is compounded by the waiting. If you hit a 10 hand streak of no Trips winner at 60 hph then that streak will end in 10 minutes. If you hit that same 10 hand losing streak on a 20 hph table then you're looking at an agonizingly slow half an hour.
At the end of the hour on the 60 hph game you might look back and think "wow, I got a flush, a full house, and a straight". At the end of the hour on the 20 hph game you'll think, "damn I played an hour and only hit a single flush" even though the win rate on the trips might have been the same.