A couple of follow up items.
Firstly I must apologize for giving some wrong information regarding drainage between the sections. There are holes in the joins between the sections but they are there as part of the manufacturing process and DO NOT let water pass from section to section. It does not matter to me as most of my use is on flat water but I will buy a battery operated bilge pump for the odd occasion I may need it.
Force 4 Battery Operated Pump
Again I am sorry for my misunderstanding of this.
Dealer in the US.
There is a dealer in California but currently has no stock of F-Ribs. Outside this state, they can be supplied by Steve Bruce until any other dealer has been appointed so contact him for prices etc.
Towing a knee board.
The factory have stated that the hull / transom structure is solid enough to take a knee board, no problem however their opinion is that as the boat is light, one person in the boat would not offer enough boat weight to counteract the force of a tight turn resulting in possible danger to the single person in the boat. A child should not be an issue but it is always better to have more weight in the boat.
That is a bit long winded and I hope it makes sense but as someone who has never done any towing (apart from a caravan) I have no knowledge whatsoever but the bottom line is the hull / transom is more than up to the job.
The boats are made to CE standard and are labeled up with the max HP in 4 stroke engines so if it says it takes a 20hp, it will. The company has found that these folding ribs do not require as large an engine as some other craft so you also have the recommended HP given as they don't NEED the larger engine. I can only say on the limited time I have had on the water using the max HP for mine, 15hp on a 330, it goes like hell and now my back is more or less okay, I am wanting to get out and get some actual speed reading.
I have asked Steve Bruce to look at this post and revise if needed.