Iso'd and ip, we all cbet tons. There are no "general rules," really. Dry boards are less likely to have hit villains who are calling.
Example: You have AK,
raise pre, and get a caller from the blinds. Board is J98 2-
suited.
Well, what kind of hands tend to
call from the blinds? I won't list my whole
range (you should, if you wanna get better), but Jx and
Tx hands are some of it, medium/small
pp's (most of) the rest. So not only are we likely
behind, we're also up against what could easily be a
monster hand (
set) or
monster draw (
OESD, combo hand like 77, or
FD). Cbetting here (depending upon stacks and
reads) may just be value towning ourselves. This situation against the same
villain would be wholly different if the board were Q73
rainbow.