Applying for more than 1 URAP research position

<p>I know that URAP lets you apply up to three positions but then I also heard that it's a lot of trouble for professors when you are accepted but then reject the offer...but then again I heard that URAP is very difficult to get into.
Anyways I'm a freshman starting my second semester and there are two labs that I'm really interested in and meet the requirements and two others that seem pretty good too. I was just wondering should I apply to three to increase my chances?</p>

<p>ofc mate, URAP is pretty hard to get into, since there are A LOT ppl who apply and profs always prefer juniors who completed xxx units and several upper div classes.</p>