I got several flat tires this summer and had numerous holes in my tires like the one above.
I got a flat on the Seagull Century as well. Someone recommended the Continental Ultra Gator Skins, found them on Performance's website and they were on sale for $34 each and got $5 knocked off with a coupon on the website.
Just wanted to add as well, one of the reasons I have gotten so many flats is that I AM RIDING!!!! If you have never gotten a flat, you should be riding more. Or else you got the best tires ever.
Who knows but I spent a while getting those new tires on my bike. It took 8 hands to stretch them over my rims, had to get my dogs to help!
Woof woof, we did it.