Usually items and other brands are exempted from eastbay coupons.
A money saving approach would be to buy Gift Cards - using the deal listed by Mr. Cheap on this link >
Buy the GC and pay for UGGS using the GC. Effectively you save 20% on those boots.
Another idea about saving would be to use BING when paying using the gift card.
Bing is currently offering 20% off on purchases .
So Buy the GC @ 20% off
Use GC to pay for purchase ( using BING) and save another 20%
I recently purchased UGG boots which were $179.99 and paid only~ $ 108 for it. Try it out - leave comments about your effort.