I use ruler as pointing tool as it is superior in ping in every way. Unless you shift ping, pinging may be outside of players' view but ruler's longer shaft is usually visible. With ruler, you can pinpoint the shown place way more precise than with a ping. Ruler stays in view as long as you need, ping fades away quite quickly. Ruler allows pointing out multiple points (or path or progression) whereas ping is limited to one. And list goes on. The only thing I use ping for is the Shift Ping as an attention grabber.