Luckily it didn't take too much time to build multiple profiles. Biggest issue I saw is that I can't enter the true tail number but just once, so I saved that for the most common setup, which for me out west flying Reno to Vegas often is in the 10,500 to 12,500 range (11,500 on the east bound). That became N3024D, I then took that performance profile and made N24D14K for the 13,500 to 15,500 profile range and N24D9K for the 8,500 to 9,500 range (I never get the opportunity to fly lower than 8,500 out here)
I then made N24DSL (sea level flying) for when we head back east to cover the slower performance I get out of the airplane when flying with the flatlanders :)
This is definitely extra work, but I only had to change TAS for each profile as I run the same power settings all the time. This will give me tighter fuel burn numbers and better ETA's and I feel is worth the extra effort.