I've had trunk mount, and just hated it. I'm not sure if I like adaptors or not. If the cost is negligible, give it a chance, I guess. If it doesn't work out, and the money's there, get a receiver hitch dedicated to the 1 1/4 receiver. It is a nice setup. I'm using a Hollywood rack, by the way. I love it.
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Some people are like a Slinky ... not really good for anything, but you still can't help but smile when you shove them down the stairs.