mystery grommets

On a Hobie 16, can someone kindly explain the purpose of these two grommets? They're about 6" apart on and are located near the sidebar, closer fore than aft.

Thanks.

http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash4/311782_281857161830369_100000182620318_1308022_3292933_n.jpg

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Karl, Captain of Stayin' Thirsty
2011 Hobie 16SE
Atlanta, GA
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Trap bungee

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Ron
Nacra F18
Reservoir Sailing Assn.
Brandon, Mississippi
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