trpnhntr’s got it. I think too many of us triathletes think there’s nothing we can do about hills, but gearing… gearing… gearing… play around with it - compact, 30 in the back, whatever, but while you might not nail a 1.02, 1.44 and your legs are toast on the run.
Then I think you need to set a cap on power during sustained climbs. That is, a certain power you won’t exceed unless you absolutely have to because you’re out of gears. This is probably close to threshold, maybe 10-20% over… and it’s not something you’re sustaining. It’s there to get you over humps, make a pass, whatever, and that’s it.