I'm self employed also and snapped the Tib/Fib in October last year on an organised trail ride.
I have an expensive loss of income policy with One Path that supposedly covers me for all bike riding and even racing (but probably not road racing due to the high speed).
I had a look at the claim form they sent out and was put off straight away by the ridiculous amount of stupid info they wanted filled in. Also, a fortnight has passed while I was ass up on the hospital bed and the couch unable to move much.
The hospital had big trouble filling out a simple form for an airline so I could attemp to claim back a fare that I couldn't use. I really can't imagine that they could have satisfied the insurance company..
Anyhow, as I run a business, I had to get others to fill in for me and keep the thing going while I was on the couch. I was able to do some paperwork on the laptop (while watching bike DVD's). In the end, my wages got paid and I didn't lose any money therefore no loss of income. No claim possible.
The whole incident cost a lot of money and time but no claim possible. Would be worth it if I got totally written off and they honoured a claim, but I have been thinking of dumping it and going back to Combined.