around where i live, near the beaches, it's trendy to be a lifeguard for the reasons you mentioned.. but seriously, at the beach they really work their asses off and save plenty of people a day..

i'd say go for it, but consider the title "LIFE" guard.. you're dealing with peoples lives here and regardless of staring at girls you're still taking a HUGE responsibility on. Would you want your brother/sister/cousin to drown because the life guard took the job to stare at women while they were drowning?

go for it, but understand the responsibilities along with it.