It’s hard to rent or buy a slip down here. People are buying 1M$ & up high rise condos on the water with no boat slips so they buy slips wherever they are available and paying a premium price for them.
As Potomacbassin mentioned the pole may twist in a strong current but will not break. I have experienced seeing my 10’ power pole blade twist pretty hard, but it never damaged. it has been a great option for our type of boating.
Go to the power pole website. They show all the mounting brackets for a pontoon. I would think any power pole dealer can order the right one for you. Here is the link:
We bought a boat that was in stock. It had everything we essentially wanted, but my wife insisted on having a front Bimini installed. She was right. Our boat is in SW Florida and it gets very hot here. We ended up paying the dealer about 1k more that what it would have cost if it was installed...