Although tripods can be bulky and awkward to carry around, they are just about a necessity when taking landscape/seascape and most macro subjects (especially without flash). 

I highly recommend buying a tripod that us quite sturdy, as flimsy tripods can be a hindrance and still create camera shake.   Buying a sizeable tripod head is also advised, especially for bigger, heavier lenses.  My personal preference is for a sturdy ball head and one that tightens firmly and securely. 

The heavier tripod and head may be a burden at times to lug around but well worth the effort when you end up producing a higher number of sharper images.