RE: Miner versus ETF versus crypto coins. Your input please2 Sep 2021 10:23
(1) There is no tax within an ISA
(2) There are no crypto ETFs available within an ISA/SIPP
(3) It's impossible to directly buy crypto within an ISA/SIPP
So people buy miners, *hoping* that the miner is highly correlated with BTC. Miners behave a bit like an option on BTC, i.e. they're geared. Warning: if BTC crashed, so would the miner - even more quickly, but you can buy an OTM put option on BTC if you're worried about the tail risk and you have a significant crypto exposure.
I'm expecting/hoping that the French Bitcoin ETF will be soon available in the UK - I cannot see why it wouldn't as it's UCITS-approved, so the FCA shouldn't be able to stop it. If not, then it's easy to replicate most of that ETF, because the index constituents are published. In any case, just taking an equal-weighted portfolio of the top 5 miners is probably not too different.
Like you, I also have some coins but will have to declare CGT.
(I might be TOTALLY wrong. I'm also TOTALLY biased. Do your own research. )