4
Could you use Formulize to create a custom form?
http://dev.xoops.org/modules/xfmod/project/?group_id=1179
I also stumbled across the following survey tool, BlueMoon MultiSurvey. Haven't tried it yet.
http://www.bluemooninc.biz/~xoops2/modules/wiwimod/index.php?page=MultiSurvey&back=WiwiHome