Hi DaddyIreland,
Just in relation to ownership of one - you will need to fly out at the start of the season to get it ready for use for the coming season - as the mobile home would probably be vacant over the winter / spring season, it will be damp (no heating on etc), which may lead to mould etc. Big cleaning needed.
Depending on the plot, you may need to cut grass / trim hedges / etc (unless covered by the ground rent charge) and fix things around the place that could be damaged over the off season. Painting / oiling decking etc.
Also, accessibility - how easy to get to the location from where you are? Are there direct flights to the place, do you need car hire, etc.
Will you actually make use of the place ? You are tying yourself to one location that you will feel obliged to make use of

. If you letting it out to family / friends, it may not be looked after the same way as you yourself would take care of it.
Need to take into account costings for ground rent / service(s) charges / etc..
On the flip side, would be a little oasis that you can escape to, when you can
