Yachting and Boating World forums: How to keep the kids enertained... first time on a sail boat?

No, not fit digital TV and Wii/XBox/PSP

Next month my sister will be bringing the nephews ( 10yrs and 12 yrs) over to visist for a week. We will not be live aboard as we have an apartment, but hope to spend as much time on the boat as possible.

I have been speaking with a colleague at work and he recommended keel hauling, said it worked for his nephews, however the safety elf might not like this ( my sister does however think that it might be an option if the kids get a bit stroppy)... Only Joking.. Well me (not sis, she is still game for it)
Seriously the kids have been out on boats before, but mainly just as passengers on a dive boat when I have been diving and they have been snorkelling. This will the first time out on a sail boat.

I need to buy a new bosuns chair anyway (yes a proper one, but not getting into that discussion) A trip up top should be exciting for them. Note these are kids that play outside in the rain and climb trees, not playstation jockeys etc.

I was thinking about making a training log book for each of them with certain tasks. The local chandelry has brass badges, crew/skipper etc, when they complete a section they get a new badge

Putting on L/J and harness and clipping on.

Naming the basic parts of the boat.

Port and Starboard (will buy them coloured socks, they will love wearing odd socks, but the youngest will deliberately wear them the wrong way round, he is smart and likes a joke)

Swabbing the deck.

These will earn them basic "Crew " badge.

Then for Skipper badge:

If we have a nice day or two with fair winds I would like them to take the helm (under supervision of course)

Also let them have a go in the tender with O/B, we have a little island approx 600m off shore from our apartment, nice little trip for us all for lunch on the island, might take a couple of trips though in the tender.

I do not intend to go too far, so will not be going through charts and navigation yet, I do not want to put them off, but I can guarantee that as soon as the eldest nephew spots the chart plotter the little b*99er will have it reprogrammed to interface with my mobile phone, a function that it does not have, but he will manage to make it do it.

I will be doing a MOB drill for all the family, and yet again I bet it is the kids that learn faster than my sis and brother in law.

I spoke to the nephews yesterday on the phone and they can not wait to come out, I sent them a link to one of the sail traing sites and they have already phoned me back telling me that a toilet should be called the heads.

I want to make their first time on a sail boat a real fun time for them so as not to put them off for the future ( obvioulsy fun as in enjoyable not as in lax in safety)

Any other tips greatly appreciated.

I do have one major question.

What is the best life jacket/ buoyancy aid that people would recommend for average size 10/12 yr olds?

The boat only has adult LJs at the moment, We will be arriving ten days in advance of my sister and the kids, so if there is nothing available locally we will still have time to arrange have them purchased in UK and my sis will bring them over ( OK I know that she will have to dump the gas bottles, we can get replacements over in Turkey) alternatively should we go for standard non inflatable LJs, might restrict movement a bit. Cost is not an option , will pay for best option for kids LJs.