Has anyone tried those waterproofs with wellies attached? My 2 preschoolers may as well not be wearing waterproofs or boots at all, as the puddles splash over their boots, or they stand in deep puddles that go into their boots. Also the waterproofs are only splash proof; they don't hold up to sitting down in puddles. I'm sick of muddy wet clothes, but don't want to pay for these wader things if they are shoddy quality; any opinions?