Wilk, yours is a spot on answer, always do same, but that's me. We can't remotedly compare UK sometimes extreme water conditions to the "calm" ones we have down here. Posted same question on other boating forums and received all kind of answers, from checking weather cond before leaving, would not make such a long outing, it's against the law to put people's lifes in jeopardy or you're a nutty professor boating guy.
That's a awesome shot, were you following a carrier, gee what a wide near flat wake, was just for the extreme shot, seems you have near flat water conditions side of wake right ?
The idea is to pick a good samaritan boat to follow, not under flat calm no wind water cond thought, just choppy, windy, wavy enough for a uncomfortable bumpy ride back home. Pick the one with a less speed than the max speed your boat is capable of achieving. That way will not be stranded behinh him if speeding up in the event he feels touted by your uncomfy back presence.
Personally feel very comfy chasing boats that returns back home at less than 20 knots max when using a 18 HP engine and much more speed while chasing faster boats with a 30 HP. How do you get off wake provided that some huge engines produces very high waves at both sides of middle wake. Have you ever ridden on top middle high & wide water hump that some powerful engines and props produces ? it's a fantastic new sport, full adrenalide ride over agitated waters.
BTW, is it legal, ilegal to do so in UK, or not an issue, anyway it's your sole responsability if anything happens to you, samaritan will probably never aknowledge it...