I moved the submit button to the bottom of the survey and I thought others might want to do the same, so here's how I did it.
In the plugins section of your WP Dashboard, click Editor and in Select Plugin to Edit, choose Surveys Extended.
Click to open the file called
Scroll down about 3/4 of the way through the file and locate the line that says:
<input type="submit" name="action" id="survey-action-button" value="<?php e("Submit Survey", 'surveyse') ?>" />
Cut that line and paste it just above the line that says:
This will move the Submit Survey button to the bottom of the survey.
Incidentally, while you're there, you can also change the words that appear in the button. Maybe you want it to say Vote Now! or Send Survey or something else. On the line you just pasted find the words Submit Survey between quotes and change it to whatever you want it to say.
Click Update File to save your changes
NOTE: If you ever update the plugin, it will likely erase these changes.