Paying off mortgage with bitcoin

Looking for different ideas regarding paying off a mortgage with bitcoin.

With the probable upcoming bull run, there will be many people who end up being in the position where they could pay off the mortgage with the gains.....but what is the best option?

My thoughts....

1. Just keep the bitcoin and sell off fractions to keep paying the monthly mortgage repayments until its paid off

2. Sell off enough bitcoin to completely pay off the mortgage in one go, thereby saving a huge chunk of the interest payments. This option also gives piece of mind that whatever happens, your home is paid off. Downside would be huge tax bill for selling so much bitcoin at once.

3. Transfer mortgage to a bitcoin mortgage. Not looked into this option so would appreciate comments from anyone with experience

4. Wait to see if more financial products are released to solve this, now that bitcoin etf products have hit the market

Any other ideas would be greatly appreciated. Thanks