Rubber knee high boots and splashpants. If you go the hip boot route, try them on first, some much more comfortable than others. Or you could just get a bike
you can get the cheap rubber insulated hip boots or the fancy ankle contor hip boots from cabelas that i like. get some comercial grade splash pants to go over them
todays schoolie is tomorrows keeper,todays keeper is tomorrows cow,practice catch and release!!!.
Picked up my knee highs at wilcox marine supply in galilee around the corner from pt judith. Very comfortable can wear and walk in them all night and day.
I wear the knee-highs with splash pants when it's too cold to get wet on the outer beach. Same pants I wear with foul weather top in the boat. I've got a pair I bought on sale at EMS three years ago. They were made for skiers and are dam near industructible and light as a feather.