IMO, it will be difficult to get multiple offers without an agent. The agent knows how to pre-market the property (privately to other agents as well as public) before it goes on sale, to generate a buzz and interest, and knows how the local system works for accepting offers -- efficiently, without scaring anyone off completely.
You may be able to figure this out, but I bet many buyers would just offer full price or hold back to see if you will "break" as a FSBO first.
So, calculate if the increase in multiple bids is more than an agent's fee. (interview several about their approach to multiple bids, too, if you decide on this approach, not all agents are good at it themselves)
You don't need an agent to sell at a fair price, in a hot market, but getting top dollar may be harder.
(source -- I suck at holding off for multiple offers, even when I intend to, the sheer work and "unknown" of the sale process does me in)