I asked for any info on making these boots, which are common to several models and which cost £80 +vat + postage. I'm sure there was a thread on the subject some time ago, but Google was fruitless and there were no replies to recent thread.
So I bit the bullet and bought one, but before fitting it I took off a plaster of paris mould. The core for the rudder tip was moulded from body filler.
I bought 2kg of Polytek Poly PT Flex70 liquid casting rubber from mbfg.co.uk.
And today I cast my first boot! Similar texture and hardness to the original, and 2kg provides two boots at a cost of £55 inc vat.
I will be happy to give more details if anyone's interested
I've not uploaded pictures before, but here goes