Winterization question

Assuming all water in the engine and hoses is removed during winterization, Is there a reason to leave hoses unattached until Spring? I've always done it this way because that's how the service shops do it... but would much rather re-attach all hoses and plugs after the boat is winterized and save the work come spring. So long as water is removed from all risk points, I can't see any harm in re-attaching all hoses and plugs... but wanted to ask before i did something stupid. Thanks in advance.