After taking a mix tips from the answers I've gotten it close. The None's are still there but that's the only thing left to resolve. Here's the modified code:
arcpy.FeatureClassToFeatureClass_conversion(layer, outputWS, finalFC)[0]
outPath = 'S:\\Shared\\RouteSmart\\CO_161_Cleanscapes\\To_Tower'
name = os.path.basename(finalFC)
dataFields = [i.name for i in arcpy.ListFields(finalFC)]
file = os.path.join(outPath, ("{0}{1}{2}".format(day,name,".txt")))
print file
f = open(file, "w")
writeFields = []
for field in inFields:
if field in dataFields:
writeFields.append(field)
for row in arcpy.SearchCursor(finalFC):
# No longer need to reference name property (field.name)
fieldVals = [row.getValue(field) for field in writeFields]
# Replace nulls with empty strings
fieldsVals = ['' if i is None else i for i in fieldVals]
# Create a comma-separated string of values
fieldVals = [str(field) for field in fieldVals]
out_string = ','.join(fieldVals)
# Write the string--not the list--to the table
f.writelines(out_string)
del row
f.close()
arcpy.Delete_management(layer)
arcpy.Delete_management("OldSeq")