I took the liberty of posing the original question to a local Meteorologist here in OK. Here is his response.
Brett,
The fact of the matter is that mobile homes are simply not safe in even high winds much less tornadoes. Damage that occurs to mobile homes often looks similar to tornado damage that normally occurs to well built structures. Now, I do agree with you that it seems like many tornadoes affect mobile homes, but remember, if you have a well built home that gets hit by a weak tornado (F0-F1) then it may make news headlines, but if that same tornado hits a mobile home park you may hear that several people were killed and extensive damage occurred. So to answer your question, there is no scientific evidence whatsoever to suggest that tornadoes somehow "seek out" mobile home parks.
Regards,
Michael Armstrong
Staff Meteorologist
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