Back to the topic of getting yourself a boat. A 16ft ex Royal Navy motor boat hull has just on the Small Ads on the Steamboat Association website. It is very cheap (£450) but you would need to acquire a trailer.
Details are here [https://steamboatassociation.co.uk/page-1854572. The same seller has a nice looking but elderly engine for sale although he probably wants too much for it [https://steamboatassociation.co.uk/page-1854573].
Hope this helps.
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