Go with a short stubby. Plugging the hole is a major pain and you may never know when you'll want to mount a larger whip for one reason or another.I've been wanting to do this for a bit. I only listen to satellite radio so the long whip antenna is of no use to me. I'm debating covering the hole or going with a stubby.
I rarely spend more than a few minutes in my truck commuting to and from work so it would not likely be a factor for me (although I admit it can happen at any time here in tornado alley). But because I never know where I might be when a storm hits, I get severe weather alert on my cell phone via a local news station and NOAA.I cannot believe anyone would remove their radio mast. What do you do when severe weather hits your area? Satellite Radio won't tell you a thing if a F5 'nado is headed in your direction.