The Small Craft Advisor
When answering the questions, you don't have to click exclusively on those tiny selection buttons: to make your choice, you can also click on the text itself for each option.
Once a question has been answered, the background color of that question will turn green, giving you a clearly visible cue of your progress in filling the questionnaire.
(These two features won't work with really old browsers)
When you have answered all questions, click the Submit button to see your score. If you have made a mistake or want to make a change, you don't have to start from scratch again: just make as many changes as you want and hit the Submit button again.
Pressing the Reset button will allow to restart from scratch, if you want to, for example, test a completely different boat.