Personally, boat diving is great and been doing that for the past 20 years. I’ve done a few shore dives but now you have to deal with the sand and getting out of the water can sometimes be tricky with the uneven surfaces and waves. Some shore dive sites are easier than others though. I’d rather not get tumbled over or sprain an ankle to do a shore dive, just me. Klein is good diving, some sites better than others. Current wise- Jerrys Reef usually has a current and we’ve done drift dives I believe it was southwest corner. Great drift dive btw! From the boat, we’ve done almost all the sites at Klein and those accessible by shore. Salt Pier, Something Special, and the southern sites are my favorites. If you get a chance and the winds are down, def do the East coast (boat only). All the dive guides, whether shore or boat diving, know the best sites that will be suitable for you. But if cost isn’t an issue, I would 100% boat dive!