I feel, particularly Genghis's comments are unfair and based on assumptions
I have been into Glenforsa many times in various a/c and fly from a strip 3-4 days each week so please listen to what has been said by those who know a little about it.
You are a fool if you take a PA28 161 into Glenforsa with 3 or 4 people.
If you cant understand that then get your CFI to explain it.
If your club CFI does not stop you then he or she is a fool also.
Tony