Covering three sides of the tank helps, as does increasing the number of hides. I have noticed that my mature animals more or less stop eating, and look for places to bury at this time of the year. I make sure that the EcoEarth is nice and deep because my guys hide for the winter (despite being kept at about 72 degrees). If they can't find places to hide (in general) or to bury (in winter), mine get a little jumpy...

In addition, if the skin on the nose is broken, try dabbing daily with original Neosporin. It helps with preventing bacterial infection - see "frog first aid article". Do not use the Neosporin plus pain relief - the analgesic is toxic to froggies..