Yeah, I'm one of those guys. Back in CA the latest that I ever actually sight fished a bass off a bed was about the middle of July. Most fish back on that lake had already spawned in March and April, but I would continue to occasionally find one on a bed in May, June, and sometimes even July. The three bass I've caught over 10lbs came off beds in May, June, and then the one in July. It's not like all people mate at the same time, or all deer mate at the same time, geckos, kangaroos, etc. I think a bass will pretty much spawn whenever they want, but of course the bulk of them will be in the spring months.