Here's how it works: You come to my island with with a FULL LOAD of 30 of your very best items. Rare, funny, cool clothes, appliances, whatever you may have that you think I may not have. The better the stuff you bring, the more hybrids I'll give ya. You drop your items, I pick them up. Then I drop them and you pick them back up. This helps me catalog items, and you go home with all of your stuff and some free hybrids! I'd say 3-4 hybrids on a standard trip, up to 10 if you bring some good stuff!
FullMetalPanic Ummm? The flowers are on his/her own island? He/She would pick up the flowers on his/her island, and drop them off at the others... And I don't think OP is looking for flowers in return, so they wouldn't need to be BF.
So far, yes I have added all visitors as best friends so they can come to the island, look around at what's available, then decide what they want. We Then Go To A vacant location where I plant the flowers they request, they drop their goods, we become bfs, I catalog their items while they dig, then when they're done they pick their items back up And return home.
So far it's worked out great. Everyone has been awesome and I usually send people home with way more hybrids than they asked for. They have the option at any time to undo the best friends connection but most end up keeping it so they can come back for more hybrids at any time.
Thanks to my wonderful customers, I now have ALL flower types! Lillies and mums hybrids will be soon be available as well! I've even expanded to a FOURTH PATCH to meet demand! You guys are the best and I can't wait to serve more of you!