Can I write offers to purchase on an MLS property myself without a realtor?

[Charles Mangum]

I would like to make multiple offers on homes listed on the MLS that are of interest to me. My market is still pretty crazy and my thought is that I might get lucky and get a huge discount on a property I like if I make enough offers. Hwwever, I don't think a realtor would be too interested in writing a bunch of low ball offers (and I don't blame him). Can I write the offer and submit it myself to the seller's realtor?