It really varies by market, but I know that it is a common technique in seasonal markets to seek out MTR guests to get them through the off-season.I have also found that certain types of units don't work as well as STR. 

Ultimately, success will depend on your individual techniques and experience, so make sure you have done your research and know what works best for your particular situation.

@Jack LanderWhat technique works best for you when finding wholesale deals.

However, if the owner doesn't want either an 'installment sale' or lump sum like you said, it might be best to try to convince the owner, maybe some negotiating techniques, and some other creative ways.Try pitching the sale in the shoes of the seller.

I am considering putting an offer in of $70,000 and telling the realtor that this is my top dollar, but the offer stands, if and when the seller is actually ready to sell the property.There are several other properties (different numbers obviously) that I have considered doing this on.Does anyone use this technique?

I am looking to canvass the Ontario BP community to see if anyone has recently completed a sandwich lease and if so have you had success with this technique?

One of the buying techniques that I use to buy fixers or vacant properties or distressed properties is to find who the private lender is and contact them to buy out the loan.

That doesn't mean you won't tweak your campaign as you continue to learn your market and successful techniques however that does mean mailing over an extended period of time.  

Learn any rural marketing techniques?

This site has been useful in helping identify a number of tried and true marketing techniques.