Launch guy tip?
While there are jobs where tipping is part of the setting of the base pay, ie: waiters/waitress''s, I don''t know that dock help is one of those. That said, if someone goes beyond what is required, then a tip may be appropriate. Personally, I pay someone to do a job based on the price they give me, not a price plus tip. I wouldn''t pay extra, unless they did extra.