Switching Medigap in WA state

I just found a Medigap G policy with lower premiums than my current policy. I'm still within 6 months of having started Medicare at 65, so I assume I can switch without incurring any waiting period for coverage of pre-existing conditions. But from what I'm reading here and elsewhere, in WA I can switch Medigap policies at any future time without a gap in coverage, even temporarily, for pre-existing conditions. If this is correct, does that mean I can basically shop every year for a new Medigap G policy, switching whenever I find a lower priced one? Is there a limit to how many times I can switch? If it matters, the policies I'm looking at all seem to be of the community rated type.