And even if rates will increase by a full 1 percentage point within a year, you'll only end up paying an additional $60 (approximately) on a $100k loan. 

If you set an abnormally high option fee, which necessitates the {potential} purchaser pay it in instalments, then you start treading into the grey area that the CRA may deem a disguised instalment sale.If you go back to the stock-option analogy, the option fee is a small percentage of the strike price (say <1 - 3%) and is a fee for the option right only - it is not refundable and does not constitute the downpayment on the property (when the option holder exercises, s/he will make a downpayment and arrange their own mortgage).

Proceeds from sale or cash flow would simply follow that percentage based ownership.  

The special pays such as flight pay, HDP, ID, etc, as well as a percentage of base pay have all gone historically to the TSP, but last year I adjusted the allocations to go primarily into the Roth option.

You should at least do a 5%-6% property management fee; if you wanted financing the lender would include some percentage for property management.

He's asked for a percentage of ownership in our company because of the added value he provides (we don't have to go apply for hard money for every project, better terms than hard money, timeline flexibility).

The murdering part is that some ask for points and a double digit percent pushing the percentage even higher and most want you to start collecting the very next month on the Loan.. that's almost impossible for the Hard you have put in to finding the perfect deal...

Everyone at our Brokerage is an investor... our clients, are also almost exclusively... investors.They do a deal for a client, they get paid a percentage...They do a deal for themselves, they get paid by themselves, then get paid again to market and sell the property.To do it, you need multiple entities... ask your accountant how to set it up.

Two of the biggest percentages of one's credit is based on payment history, and utilization of credit.  

We focus more on accumulation percentages than savings.