Had a guy tell me the other day he never replaces his liner in his jet when it starts showing groovs in it he pulls in lines it in bondo sands smooth and goes.I think this would hurt your water flow a bit as the bondo wouldn't be as slick as the liner but in a pinch would this be a get by option.my liner needs changed but local shop don't stock my size be a week to get and I'm fishing this weekend.