up about 10% on analyst upgrade predicts much more upside

$Carnival (CCL.US)$
my options are up 120% since yesterday. really was quite bottomed out. sure could use some more upside. my options were down $1,000 two days ago and that literally changed overnight I greatly reduced my number of contracts I would love the upside but I don't want to risk the downside... little too volatile for me to find a good combination spread for the right risk and return