No hazing ritual, but be careful -- pick warmer days (like not the next few days!), and keep an eye on water levels. Seining sucks when you pull up ten pounds of ice in your net with each haul, and the net freezes solid when it comes out of the water. I assume you already know about the USGS gauging station on the lower part of the river (http://waterdata.usg...ite_no=01611500); keep an eye on river levels and pick low water. While many fish do hide in leafpack in slower reaches, some things (darters, sculpins, hogsuckers, etc.) remain more active... and you might find some things that surprise you. I've snorkeled some other rivers on the north side of the mainstem in a drysuit during the winter. I stumbled on a few wintering holes where all of the smallmouth from a long reach of river had migrated downriver and were stacked up in deep, slow water. BIG smallmouth. Of course I went back with a canoe and a brown hair jig with a pork rind trailer... 
Dave, yes I'm familiar with the Cacapon gauges. I've never tried snorkeling in a dry suit, but might try to use my wetsuit to expand the seasons. Love your finding smallmouth stacked up for the winter, this sounds spot on. Not to give away all my spots but in the Potomac, starting mid-November bit smallies stack up within spittin' distance of a certain major highway bridge crossing. So much so you have to beware of falling bottles, weapons used in homicides, etc.