Original Message

To answer your question; yes definitely tell them. But at the right time and place with the respect and the right attitude. Example, dont bark at them on 123.025 while they are departing. Do call their base later on, introduce yourself and who you're with and fill them in on non mandatory local procedures. Explain in detail you would like to have it explained to you. Your above scenario with 3 pads; 1, 2 and 3 would be a good one to inform others of.  I'd hope a fellow pilot would do the same for me. 

To OG utility pilot, I do agree with leaving room for another aircraft and used to employ that same technique in AK. However, in the if there is an incident / accident at a pad with multiple aircraft when it has been designed or certified for only one there will be an issues. 

Good question: carry on all. 👍