Extended full-power in small pistons

Actually, your premise about babying an engine may not be true. Is there
data that supports this "gentle" use of an engine adds to longevity?

My own plane, as well as others with the same type (an Extra 300) are
essentially operated in an on/off mode. It generally is full power (2700RPM
and full throttle) on TO, cruise to the practice area, and then on/off, with
no regard to shock cooling or heating- full power straight up, power off to
spin, then full power on the recovery. Gyroscopic maneuvers (with a
composite prop)- no problem with cranks.

Yet, with 400 hours of this operation on my plane (and many/many others
according to the reps), none have required an overhaul, with some up to
1,000h of similar operation.

Likewise, Lycoming and Continental always gave some hand waving response to
questions about running LOP, yet, Cirrus, with now many thousands of hours
of LOP operations now mandate operating in this realm.

So, a lot of what is considered "safe and prudent" operating may be more of
an old wive's tale, and not supported by actual data.