I get great results at home with 3 black Nikko pen marks on my legs for height with mount leveled and 3 marks on the rear patio tiles (leveling re legs done for that one spot of course).
Something similar with another colour if necessary would save 30mins each time at 10 Chain too I imagine. (or should I say 60 mins as it seems to turn out in a dark sky location after you've already had a drink or two....
)