Shard O'Glase said:
			
		
	
	
		
		
			Holy crap elementals are better than I thought.  I don't have access to the monster manuel for summoning purposes so I was just estimating at what elementals can do.  I had no idea they were that good.
		
		
	 
Heh, that's always throwing me too.  It sounds 'sorta impressive' till you do the math, compare it to the real world (ex: What weighs 18,000 lbs?  Anyone?) and then go 

  "OH MY GOD!  And this thing listens to 
me?!?"  
 
	
	
		
		
			  I have got to pick up knowledge summon monster creatures or something, so my character will have a better idea of what the things he summons can do. 
		
		
	 
Well shoot, seeing this shot holes in my suggestion, even before I'd had a chance to make it.  Oh well, all thought up anyhow, no reason to let it go to waste.  The 
Summon Monster line of magic isn't just about summoning the thing with the best BAB or most HP, if you want to get 
real power out of those spells you have to be familiar with the 
Monster Manual and the creatures powers.  In this case summoning something that can 
Control Water (as previously mentioned), or perhaps even 
Move Earth would be just as effective as (if not more than) something with sheer power/strength.
Knowledge is power, most 
especially when you're facing (or are a) spellcaster.  Knowing what's really going on will allow you to more accurately judge what you have to do to avoid/defeat this situation.  Is the sand-bar even real, you'd be able listen to the Captain/crew for comments to determine this (ex: "A sand-bar 
this far from shore?!?  Impossible!"), or ask them straight-out.  How did this sandbar get there, you said that you were suddenly trapped on it, this would indicate that it's not at all natural in origin, but 
how did it get there?  Is it a spell or perhaps 
Summoned creature that's maintaining it, if so could you 
Dispel the magic and thus remove the sandbar?
And don't hesitate to use combinations of magics to help your cause.  Example: Say you summon the biggest Kraken you can, but it's just not big enough to manage the chore.   If you had access to an 
Enlarge or even 
Polymorph magic you could increase the critter's size (and perhaps power too), thus helping it help you.  Toss it that 
Bull's Strength spell you've been holding-back for the Fighter in the next melee, it's already been pointed out that big critters get more 'bang' for a STR point so exploit that fact.
And for pitty's sake, 
tell us what happened!  Nothing more irritating (at least to me) than to offer what we think is good advice, only to never hear how helpfull it was.  Even better would be if you came up with something nobody'd thought of, we'd certainly like to hear about it and praise your creativity.
Hatchling Dragon - Did I mention I babble when I'm tired?  
