My last RIB was an early Hurricane, and I believe it was Strongon. I was rear-ended while pulling the boat, and ended up with a 3' (as in foot) tear in the front tube. The insurance company agreed to write the boat off because the dealer said it "couldn't be repaired properly".
The dealer bought the boat for nothing from the insurance company however, repaired it and sold it back to me. I then sold it to a friend who used it hard for six years. He sold it to another guy who used it as a tender for a few years and then traded it in. I saw it on a website for sale a couple of years ago... it had a new engine, but that "unrepairable" tube was still in use.
Considering that the bow tube takes a hell of a lot more abuse than that little cone does, I would certainly try the repair first. If it doesn't take properly, you can always go to "Plan B"...