I would think the weight of the extra fuel burnt flying all the way to the piece of UK coastline nearest to France, and the same on the French side, is way more than 7kg?
Yes, but most microlights will be limited to about 15kg baggage and most of those flying to France are not just going to L2K for lunch, so they are usually up to that limit with clothes, camping gear, spares, oil and tools. Then when you get to the other side, there is little space left for the drysuits and lifevests. I have yet to see a microlight equipped with a raft.
It's a whole different world, Peter,. You should hitch a ride one day and enjoy some real flying.
