I've got a 2006 I-Drive 2 and it weighs in the 32-34 pound ballpark with heavier wheels and a heavier fork. The design isn't that much different from the 2007 and you should be around 32 pounds.
If you have an Academy Sports Store or a large store that sells fishing stuff, go and buy a hanging scale for 12 to 20 bucks. I bought one and it works pretty good. It's worth the 12 bucks I paid for it.
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